HP EliteOne 1000 G1s Maintenance & Service Guide

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Maintenance & Service Guide
HP EliteOne 1000 G1 All-in-One Business PCs
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© Copyright 2017 HP Development Company, L.P.
AMD is a trademark of Advanced Micro Devices, Inc. Bluetooth is a trademark owned by its proprietor and used by HP Inc. under license. Intel, Celeron, and Pentium are trademarks of Intel Corporation in the U.S. and other countries. Microsoft and Windows are trademarks of the Microsoft group of companies.
Product notice
This user guide describes features that are common to most models. Some features may not be available on your computer.
Software terms
By installing, copying, downloading, or otherwise using any software product preinstalled on this computer, you agree to be bound by the terms of the HP End User License Agreement (EULA). If you do not accept these license terms, your sole remedy is to return the entire unused product (hardware and software) within 14 days for a full refund subject to the refund policy of your seller.
The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.
First Edition: September 2017
Document Part Number: 925654-001
For any further information or to request a full refund of the price of the computer, please contact your seller.
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About This Book
This guide provides basic information for upgrading this computer model.
WARNING! Indicates a hazardous situation that, if not avoided, could result in death or serious injury.
CAUTION: Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.
IMPORTANT: Indicates information considered important but not hazard-related (for example, messages
related to property damage). A notice alerts the user that failure to follow a procedure exactly as described could result in loss of data or in damage to hardware or software. Also contains essential information to explain a concept or to complete a task.
NOTE: Contains additional information to emphasize or supplement important points of the main text.
TIP: Provides helpful hints for completing a task.
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iv About This Book
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Table of contents
1 Product features ........................................................................................................................................... 1
Overview ................................................................................................................................................................ 1
Base unit top components ..................................................................................................................................... 2
Base unit side components .................................................................................................................................... 2
Base unit rear components .................................................................................................................................... 3
Display front components ..................................................................................................................................... 3
Webcam components ............................................................................................................................................ 4
Infrared (IR) webcam (optional) .......................................................................................................... 4
Full High Denition (FHD) webcam (optional) ..................................................................................... 4
Serial and product number locations .................................................................................................................... 5
2 Illustrated parts catalog ................................................................................................................................ 6
3 Routine care, SATA drive guidelines, and disassembly preparation .................................................................. 10
Electrostatic discharge information .................................................................................................................... 10
Generating static ............................................................................................................................... 11
Preventing electrostatic damage to equipment ............................................................................... 11
Personal grounding methods and equipment .................................................................................. 12
Grounding the work area ................................................................................................................... 12
Recommended materials and equipment ........................................................................................ 12
Operating guidelines ........................................................................................................................................... 13
Routine care ......................................................................................................................................................... 13
General cleaning safety precautions ................................................................................................ 13
Cleaning the computer case .............................................................................................................. 14
Cleaning the keyboard ....................................................................................................................... 14
Cleaning the display .......................................................................................................................... 14
Cleaning the mouse ........................................................................................................................... 15
Service considerations ......................................................................................................................................... 15
Tools and software requirements ..................................................................................................... 15
Screws ............................................................................................................................................... 15
Cables and connectors ...................................................................................................................... 15
Hard Drives ........................................................................................................................................ 15
Lithium coin cell battery .................................................................................................................... 16
4 Removal and replacement procedures ........................................................................................................... 17
Preparing to disassemble the computer ............................................................................................................. 17
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Base unit access covers ....................................................................................................................................... 18
Display head ......................................................................................................................................................... 20
Internal components ........................................................................................................................................... 21
Memory ................................................................................................................................................................ 22
Memory module specications ......................................................................................................... 22
Populating memory modules ............................................................................................................ 22
Installing memory modules .............................................................................................................. 23
RTC battery .......................................................................................................................................................... 24
Hard drive ............................................................................................................................................................. 26
Fans ...................................................................................................................................................................... 28
Solid-state drive (M.2) ......................................................................................................................................... 30
Display head rear panel ....................................................................................................................................... 31
Camera ................................................................................................................................................................. 32
WLAN module ...................................................................................................................................................... 34
Speakers .............................................................................................................................................................. 35
Antennas .............................................................................................................................................................. 36
Heat sink .............................................................................................................................................................. 37
Processor ............................................................................................................................................................. 38
System board ....................................................................................................................................................... 40
System board callouts ......................................................................................................................................... 44
5 Computer Setup (F10) Utility ........................................................................................................................ 45
Computer Setup (F10) Utilities ............................................................................................................................ 45
Using Computer Setup (F10) Utilities ................................................................................................ 45
Computer Setup–Main ....................................................................................................................... 47
Computer Setup—Security ............................................................................................................... 49
Computer Setup—Advanced ............................................................................................................. 53
Recovering the conguration settings ................................................................................................................ 58
6 Using HP PC Hardware Diagnostics (UEFI) ....................................................................................................... 59
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................... 59
Using Remote HP PC Hardware Diagnostics (UEFI) settings (select products only) ........................................... 60
Customizing Remote HP PC Hardware Diagnostics (UEFI) settings ................................................. 60
7 Troubleshooting without diagnostics ............................................................................................................ 61
Safety and comfort .............................................................................................................................................. 61
Before you call for technical support .................................................................................................................. 61
Helpful hints ........................................................................................................................................................ 62
Solving general problems .................................................................................................................................... 63
Solving power problems ...................................................................................................................................... 66
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Solving hard drive problems ................................................................................................................................ 67
Solving audio problems ....................................................................................................................................... 69
Solving printer problems ..................................................................................................................................... 70
Solving keyboard and mouse problems .............................................................................................................. 71
Solving hardware installation problems ............................................................................................................. 72
Solving network problems .................................................................................................................................. 74
Solving memory problems .................................................................................................................................. 76
Solving USB ash drive problems ........................................................................................................................ 77
Solving Internet access problems ....................................................................................................................... 78
Solving software problems .................................................................................................................................. 79
8 Backing up, restoring, and recovering ........................................................................................................... 81
Creating recovery media and backups ................................................................................................................ 81
Using HP Recovery media (select products only) ............................................................................. 81
Using Windows tools ......................................................................................................................... 82
Using the HP Cloud Recovery Download Tool (select products only) ............................................... 83
Restore and recovery ........................................................................................................................................... 83
Recovering using HP Recovery Manager ........................................................................................... 83
What you need to know before you get started ............................................................. 83
Using the HP Recovery partition (select products only) ................................................. 84
Using HP Recovery media to recover .............................................................................. 85
Changing the computer boot order ................................................................................ 85
Removing the HP Recovery partition (select products only) ......................................... 85
9 POST error messages and diagnostic front panel LEDs and audible codes ......................................................... 86
POST numeric codes and text messages ............................................................................................................. 86
Interpreting system validation diagnostic front panel LEDs and audible codes ................................................ 91
10 Password security and resetting CMOS ........................................................................................................ 93
Resetting the password jumper .......................................................................................................................... 93
Clearing and resetting the BIOS ........................................................................................................................... 95
Appendix A Power cord set requirements ......................................................................................................... 96
General requirements .......................................................................................................................................... 96
Japanese power cord requirements .................................................................................................................... 96
Country-specic requirements ............................................................................................................................ 97
Appendix B Statement of memory volatility ..................................................................................................... 98
Nonvolatile memory usage ............................................................................................................................... 100
Questions and answers ..................................................................................................................................... 102
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Using HP Sure Start (select models only) .......................................................................................................... 103
Appendix C Specications ............................................................................................................................. 104
Index ........................................................................................................................................................... 105
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1 Product features

Overview

NOTE: For the latest manuals on this product, go to http://www.hp.com/support. Select Find your product,
and then follow the on-screen instructions.
Overview 1
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Base unit top components

Components
(1) Power button (5) Hang up button
(2) Call button (6) Speaker mute button
(3) Microphone mute button (7) Volume slider
(4) Webcam mute button

Base unit side components

Components
(1) Scan ngerprint reader (3) USB Type-C charging port
(2) Headset jack (4) USB 3.1 Type-A charging port
2 Chapter 1 Product features
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Base unit rear components

Components
(1) Cover removal buttons (5) DisplayPort In
(2) USB 3.1 Type-A ports (4) (6) Power connector
(3) HDMI port (7) RJ-45 (network) jack
(4) DisplayPort Out (8) Security cable slot

Display front components

Components
(1) Webcam
(2) On-screen display buttons (for adjusting the screen)
Base unit rear components 3
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Webcam components

Infrared (IR) webcam (optional)

Components
Front View
(1) Webcam light (4) IR webcam
(2) IR light (5) Rear webcam adjustment wheel
(3) Full High Denition (FHD) webcam
Top view
(6) Digital microphones
Rear and side view
(7) Webcam release holes
(8) Webcam light (9) FHD webcam
Full High Denition (FHD) webcam (optional)
Components
Front view
(1) Webcam light
(2) FHD webcam
Top view
(3) Digital microphones
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Serial and product number locations

Each computer and display has a unique Commodity Tracking number (CT#) (similar to a serial number) and a product ID number that are located on the exterior of the device. Keep these numbers available for use when contacting customer service for assistance.
The display numbers are located on the bottom edge of the display head.
The computer base unit numbers are located on the underside of the base unit.
Serial and product number locations 5
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2 Illustrated parts catalog

NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions.
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Item Description
(1) Rear access cover
(2) Front access cover
(3) Speaker Kit
(4) System board
(5) Right fan
(6) Left fan
(7) Heat sink and pipe
(8) Display cable
(9) Hard drive
2 TB, hybrid SSD, 7 mm
2 TB, 5400 rpm, 7 mm
1 TB, hybrid SSD, 7 mm
1 TB, 7200 rpm, 9.5 mm
500 GB, hybrid SSD, 7 mm
500 GB, 7200 rpm, 7 mm
500 GB, 7200 rpm, self–encrypting (SED), 7 mm
500 GB, 5400 rpm, FIPS, 7 mm
Solid-state drive, 2.5-inch
512 GB, SATA-3, TLC
512 GB, SATA-3, self-encrypting (SED), Opal2. TLC
512 GB, SATA-3, FIPS, TLC
256 GB, SATA-3, TLC
256 GB, SATA-3, self-encrypting (SED), TLC
240 GB, SATA-3, TLC
240 GB, SATA-3, Opal2, TLC
(10) Solid-state drive, M.2
1 TB, SATA-3, TLC
512 GB, FIPS, TLC
512 GB, value, PCIe
256 GB, TLC, PCIe
256 GB, value, PCIe
(11) Camera
1080p (2 MP)
480p, IR
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Item Description
* Display (whole unit)
23.8-inch, full high-denition (FHD), UWVA, touch screen
23.8-inch, non-touch screen, FHD, UWVA
27-inch, non-touch screen, ultra high-denition (UHD), UWVA
34-inch, non-touch screen, wide quad HD (WQHD), UWVA
* Processor
Intel Core i7-7700 processor
Intel Core i7-6700 processor
Intel Core i5-7600 processor
Intel Core i5-7500 processor
Intel Core i5-6600 processor
Intel Core i5-6500 processor
Intel Core i3-7320 processor
Intel Core i3-7300 processor
Intel Core i3-7100 processor
Intel Core i3-6100 processor
Intel Pentium G4600 processor
Intel Pentium G4620 processor
Intel Pentium G4560 processor
Intel Celeron G3950 processor
Intel Celeron G3930 processor
* Memory modules (PC4-17000)
16 GB
8 GB
4 GB
* WLAN modules
Intel Dual Band Wireless-AC 7265 NV
Intel Dual Band Wireless-AC 8265 (vPro)
Intel Dual Band Wireless-AC 8265 (non-vPro)
Intel Dual Band Wireless-AC 3168
Realtek RTL8821CE 802.11AC 1x1 Wi-Fi + BT 4.2 Combo Adapter
Intel Centrino Wireless-N 2230
* RTC battery
* USB-C to USB-A hub
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Item Description
* Adapters
USB Type-C to USB 3.0
DisplayPort to DVI
DisplayPort to VGA
DisplayPort to HDMI 1.4
USB to serial
* DisplayPort cable
* Power supply, 180 W (external)
* Mouse
HP PS2 Optical
HP USB Optical
HP USB Laser
USB premium
USB, wired, health care
HP Antimicrobial
HP USB Hardened
HP USB Grey
* Keyboard
Washable, USB/PS2
USB
USB. slim
Wireless keyboard and mouse
USB, slim, smart card
Antimicrobial
Wired, health care
Premium, wireless
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3 Routine care, SATA drive guidelines, and
disassembly preparation
This chapter provides general service information for the computer. Adherence to the procedures and precautions described in this chapter is essential for proper service.
CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system
board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

Electrostatic discharge information

A sudden discharge of static electricity from your nger or other conductor can destroy static-sensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device exposed to electrostatic discharge (ESD) may not appear to be aected at all and can work perfectly throughout a normal cycle. The device may function normally for a while, but it has been degraded in the internal layers, reducing its life expectancy.
Networks built into many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions.
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Generating static

The following table shows that:
Dierent activities generate dierent amounts of static electricity.
Static electricity increases as humidity decreases.
Relative Humidity
Event 55% 40% 10%
Walking across carpet
Walking across vinyl oor
Motions of bench worker
Removing DIPs from plastic tube
Removing DIPs from vinyl tray
Removing DIPs from Styrofoam
Removing bubble pack from PCB
Packing PCBs in foam-lined box
These are then multi-packaged inside plastic tubes, trays, or Styrofoam.
NOTE: 700 volts can degrade a product.

Preventing electrostatic damage to equipment

Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of sensitivity. The following packaging and grounding precautions are necessary to prevent damage to electric components and accessories.
To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes.
7,500 V
3,000 V
400 V
400 V
2,000 V
3,500 V
7,000 V
5,000 V
15,000 V
5,000 V
800 V
700 V
4,000 V
5,000 V
20,000 V
11,000 V
35,000 V
12,000 V
6,000 V
2,000 V
11,500 V
14,500 V
26,500 V
21,000 V
Protect all electrostatic parts and assemblies with conductive or approved containers or packaging.
Keep electrostatic sensitive parts in their containers until they arrive at static-free stations.
Place items on a grounded surface before removing them from their container.
Always be properly grounded when touching a sensitive component or assembly.
Avoid contact with pins, leads, or circuitry.
Place reusable electrostatic-sensitive parts from assemblies in protective packaging or conductive foam.
Electrostatic discharge information 11
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Personal grounding methods and equipment

Use the following equipment to prevent static electricity damage to equipment:
Wrist straps are exible straps with a maximum of one-megohm ± 10% resistance in the ground cords. To provide proper ground, a strap must be worn snug against bare skin. The ground cord must be connected and t snugly into the banana plug connector on the grounding mat or workstation.
Heel straps/Toe straps/Boot straps can be used at standing workstations and are compatible with most types of shoes or boots. On conductive oors or dissipative oor mats, use them on both feet with a maximum of one-megohm ± 10% resistance between the operator and ground.
Static Shielding Protection Levels
Method Voltage
Antistatic plastic
Carbon-loaded plastic
Metallized laminate

Grounding the work area

To prevent static damage at the work area, use the following precautions:
Cover the work surface with approved static-dissipative material. Provide a wrist strap connected to the work surface and properly grounded tools and equipment.
Use static-dissipative mats, foot straps, or air ionizers to give added protection.
Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate. Handle them only at static-free work areas.
Turn o power and input signals before inserting and removing connectors or test equipment.
Use xtures made of static-safe materials when xtures must directly contact dissipative surfaces.
Keep work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam.
Use eld service tools, such as cutters, screwdrivers, and vacuums, that are conductive.

Recommended materials and equipment

Materials and equipment that are recommended for use in preventing static electricity include:
1,500
7,500
15,000
Antistatic tape
Antistatic smocks, aprons, or sleeve protectors
Conductive bins and other assembly or soldering aids
Conductive foam
Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance
Static-dissipative table or oor mats with hard tie to ground
Field service kits
Static awareness labels
Wrist straps and footwear straps providing one-megohm +/- 10% resistance
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Material handling packages
Conductive plastic bags
Conductive plastic tubes
Conductive tote boxes
Opaque shielding bags
Transparent metallized shielding bags
Transparent shielding tubes

Operating guidelines

To prevent overheating and to help prolong the life of the computer:
Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and cold.
Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all vented sides of the computer and above the display to permit the required airow.
Never restrict the airow into the computer by blocking any vents or air intakes. Do not place the keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also restricts airow.
Occasionally clean the air vents on all vented sides of the computer. Lint, dust, and other foreign matter can block the vents and limit the airow. Be sure to unplug the computer before cleaning the air vents.
Never operate the computer with the covers removed.
Keep liquids away from the computer and keyboard.
Install or enable power management functions of the operating system or other software, including sleep states.

Routine care

General cleaning safety precautions

1. Never use solvents or ammable solutions to clean the computer.
2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then use
the cloth on the component.
3. Always unplug the computer when cleaning with liquids or damp cloths.
4. Always unplug the computer before cleaning the keyboard, mouse, or air vents.
5. Disconnect the keyboard before cleaning it.
6. Wear safety glasses equipped with side shields when cleaning the keyboard.
Operating guidelines 13
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Cleaning the computer case

Follow all safety precautions in General cleaning safety precautions on page 13 before cleaning the computer.
To clean the computer case, follow the procedures described below:
To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.
For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping it with a cloth or swab dampened with clear water.
For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol will evaporate quickly and not leave a residue.
After cleaning, always wipe the unit with a clean, lint-free cloth.
Occasionally clean the air vents on the computer. Lint and other foreign matter can block the vents and limit the airow.

Cleaning the keyboard

Follow all safety precautions in General cleaning safety precautions on page 13 before cleaning the keyboard.
To clean the tops of the keys or the keyboard body, follow the procedures described in Cleaning the computer
case on page 14.
When cleaning debris from under the keys, review all rules in General cleaning safety precautions on page 13 before following these procedures:
CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under the
keys.
Visible debris underneath or between the keys may be removed by vacuuming or shaking.
Canned, pressurized air may be used to clean debris from under the keys. Caution should be used as too much air pressure can dislodge lubricants applied under the wide keys.
If you remove a key, use a specially designed key puller to prevent damage to the keys. This tool is available through many electronic supply outlets.
CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these keys are
improperly removed or installed, the keyboard may not function properly.
Cleaning under a key may be done with a swab moistened with isopropyl alcohol and squeezed out. Be careful not to wipe away lubricants necessary for proper key functions. Use tweezers to remove any bers or dirt in conned areas. Allow the parts to air dry before reassembly.

Cleaning the display

Wipe the display screen with a clean cloth moistened with water or with a towelette designed for cleaning displays. Do not use sprays or aerosols directly on the screen; the liquid may seep into the housing and damage a component. Never use solvents or ammable liquids on the display.
To clean the display body follow the procedures in Cleaning the computer case on page 14.
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Cleaning the mouse

Before cleaning the mouse, ensure that the power to the computer is turned o.
Clean the mouse ball by rst removing the retaining plate and the ball from the housing. Pull out any debris from the ball socket and wipe the ball with a clean, dry cloth before reassembly.
To clean the mouse body, follow the procedures in Cleaning the computer case on page 14.

Service considerations

Listed below are some of the considerations that you should keep in mind during the disassembly and assembly of the computer.

Tools and software requirements

To service the computer, you need the following:
Torx T-15 screwdriver
Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)
Phillips #2 screwdriver
Phillips #1 screwdriver
Diagnostics software

Screws

The screws used in the computer are not interchangeable. They may have standard or metric threads and may be of dierent lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HP strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations.
CAUTION: Metric screws have a black nish. U.S. screws have a silver nish and are used on hard drives only.
CAUTION: As each subassembly is removed from the computer, it should be placed away from the work area
to prevent damage.

Cables and connectors

Most cables used throughout the unit are at, exible cables. These cables must be handled with care to avoid damage. Apply only the tension required to seat or unseat the cables during insertion or removal from the connector. Handle cables by the connector whenever possible. In all cases, avoid bending or twisting the cables, and ensure that the cables are routed in such a way that they cannot be caught or snagged by parts being removed or replaced.
CAUTION: When servicing this computer, ensure that cables are placed in their proper location during the
reassembly process. Improper cable placement can damage the computer.

Hard Drives

Handle hard drives as delicate, precision components, avoiding all physical shock and vibration. This applies to failed drives as well as replacement spares.
Service considerations 15
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If a drive must be mailed, place the drive in a bubble-pack mailer or other suitable protective packaging and label the package “Fragile: Handle With Care.”
Do not remove hard drives from the shipping package for storage. Keep hard drives in their protective packaging until they are actually mounted in the CPU.
Avoid dropping drives from any height onto any surface.
If you are inserting or removing a hard drive, turn o the computer. Do not remove a hard drive while the computer is on or in standby mode.
Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid touching the connector. For more information about preventing electrostatic damage, refer to
Electrostatic discharge information on page 10
Do not use excessive force when inserting a drive.
Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic elds such as displays or speakers.

Lithium coin cell battery

The battery that comes with the computer provides power to the real-time clock and has a minimum lifetime of about three years.
See the appropriate removal and replacement chapter for the chassis you are working on in this guide for instructions on the replacement procedures.
WARNING! This computer contains a lithium battery. There is a risk of re and chemical burn if the battery is
handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose in water or re, or expose it to temperatures higher than 140ºF (60ºC). Do not attempt to recharge the battery.
NOTE: Batteries, battery packs, and accumulators should not be disposed of together with the general
household waste. In order to forward them to recycling or proper disposal, please use the public collection system or return them to HP, their authorized partners, or their agents.
16 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
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4 Removal and replacement procedures

The following sections provide information about disassembling various components of the computer.

Preparing to disassemble the computer

To avoid injury and equipment damage, always complete the following steps in order, when opening the computer.
1. Remove all removable media, such as USB ash drives, from the computer.
2. Turn o the computer properly through the operating system, and turn o any external devices.
3. Disconnect the power cord from the AC outlet and disconnect any external devices.
IMPORTANT: Regardless of the power-on state, voltage is always present on the system board as long
as the system is plugged into an active AC outlet. You must disconnect the power cord and wait approximately 30 seconds for the power to drain to avoid damage to the internal components of the computer.
4. Disconnect all other attached cables from the back of the computer.
CAUTION: Beware of sharp edges inside the chassis.
Preparing to disassemble the computer 17
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Base unit access covers

The base unit access covers must be removed to access internal computer components.
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. To remove the rear access cover, press the two release buttons on the rear of the base unit (1), and at
the same time rotate the rear of the cover up (2). Then slide the cover back to remove it from the base (3).
3. To remove the front access cover after removing the rear access cover:
a. Press the two release buttons on the rear of the front cover (1) and lift the cover straight up (2) to
remove it.
NOTE: There is a cable connected to the right side of the front cover (3). Be careful not to pull the
cover up too far and cause the cable to disconnect.
18 Chapter 4 Removal and replacement procedures
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b. Rotate the left side of the cover away from the base unit while being careful not to disconnect the
cable attached to the right side of the cover.
4. To replace the front access cover, press the cover straight down onto the base unit so that the cover
snaps in place.
IMPORTANT: Be sure to press this cover straight down. To avoid damaging components on the
underside of the cover, do not slide access cover into place.
5. To replace the rear access cover, slide tabs on the front of the rear cover under the slots on the rear of
the front cover (1), and then press the rear of the rear cover down (2). Make sure no wires or parts are pinched as the cover is seated.
6. Reconnect the power cord and any external devices, and then turn on the computer.
Base unit access covers 19
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Display head

The display head can be replaced or upgraded to a dierent display.
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear access cover (see Base unit access covers on page 18).
3. Disconnect the two display cables attached to the system board by squeezing inward on the two ends of
the cable connectors (1) and pulling the cable connectors up and o the system board (2).
4. Remove the cables from the clip (3).
5. As shown in the following illustration, loosen the two captive screws at the base of the display head’s
neck (1). While holding onto the bottom of the display head from the front with one hand, slide the display head back with your other hand to clear it from the small metal retention tab, and then lift the display o the base (2).
IMPORTANT: The display head is heavy. Make sure you are holding the display head rmly when
removing it to prevent the display head from falling over and being damaged.
To replace the display head, reverse the removal procedures.
20 Chapter 4 Removal and replacement procedures
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Internal components

Components
(1) Hard drive (3) RTC battery
(2) M.2 SSD (under the fan) (4) Memory modules
Internal components 21
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Memory

Description
16-GB
8-GB
4-GB
The memory slots on the system board can be populated with up to two industry-standard small outline dual inline memory modules (SODIMMs). These memory slots are populated with at least one preinstalled memory module.
Memory module specications
For proper system operation, the memory modules must meet the following qualications:
Component Specication
Memory modules 1.2 volt DDR4-SDRAM memory modules
Compliance Unbuered non-ECC DDR4-2400 MHZ–compliant
Pins Industry-standard 260 pins containing the mandatory Joint Electronic Device
Engineering Council (JEDEC) specication
Support Support CAS latency DDR4 2400 MHz (15–15–15 timing)
Slots 2
Maximum Memory 16 GB per memory slot, 32 GB total
Supported 4 Gbit and 8 Gbit non-ECC memory technologies single-sided and double-sided SODIMMs
Note The system will not operate properly if you install unsupported SODIMM
HP oers upgrade memory for this computer and advises that the consumer purchase it to avoid compatibility issues with unsupported third-party memory.

Populating memory modules

Refer to the following table to identify the memory module channel locations.
Location System board label Channel
Lower Socket SODIMM1 Channel B
Upper Socket SODIMM3 Channel A
memory. SODIMMs constructed with x8 and x16 DDR devices are supported; memory modules constructed with x4 SDRAM are not supported.
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The system will automatically operate in single channel mode, dual channel mode, or ex mode, depending on how the memory modules are installed.
The system will operate in single channel mode if the memory module slots are populated in one channel only.
The system will operate in a higher-performing dual channel mode if the memory capacity of the memory module in Channel A is equal to the memory capacity of the memory module in Channel B.
The system will operate in ex mode if the memory capacity of the memory module in Channel A is not equal to the memory capacity of the memory module in Channel B. In ex mode, the channel populated with the least amount of memory describes the total amount of memory assigned to dual channel and the remainder is assigned to single channel. If one channel will have more memory than the other, the larger amount should be assigned to channel A.
In any mode, the maximum operational speed is determined by the slowest memory module in the system.

Installing memory modules

There are two memory sockets on the system board. To remove or install memory modules:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear and front access panels. See Base unit access covers on page 18.
3. To locate the memory modules on the system board, see Internal components on page 21.
4. To remove a memory module, press outward on the two latches on each side of the memory module (1),
and then pull the memory module out of the socket (2).
Memory 23
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5. To install a memory module, slide the memory module into the socket at approximately a 30° angle (1),
and then press the memory module down (2) so that the latches lock it in place.
NOTE: A memory module can be installed in only one way. Match the notch on the module with the tab
on the memory slot.
6. Replace the base unit front and rear access panels. See Base unit access covers on page 18.
7. Reconnect the power cord and any external devices, and then turn on the computer. The computer
automatically recognizes the additional memory when you turn on the computer.

RTC battery

The RTC battery that comes with the computer provides power to the real-time clock. When replacing the battery, use a battery equivalent to the battery originally installed in the computer. The computer comes with a 3-volt lithium coin cell battery.
WARNING! The computer contains an internal lithium manganese dioxide battery. There is a risk of re and
burns if the battery is not handled properly. To reduce the risk of personal injury:
Do not attempt to recharge the battery.
Do not expose to temperatures higher than 60°C (140°F).
Do not disassemble, crush, puncture, short external contacts, or dispose of in re or water.
Replace the battery only with the HP spare designated for this product.
IMPORTANT: Before replacing the battery, it is important to back up the computer CMOS settings. When the
battery is removed or replaced, the CMOS settings will be cleared.
Static electricity can damage the electronic components of the computer or optional equipment. Before beginning these procedures, ensure that you are discharged of static electricity by briey touching a grounded metal object.
NOTE: The lifetime of the lithium battery can be extended by plugging the computer into a live AC outlet.
The lithium battery is only used when the computer is NOT connected to AC power.
HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable batteries. For more information about recycling programs, go to http://www.hp.com/recycle.
To locate the battery on the system board, see Internal components on page 21.
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear and front access panels (see Base unit access covers on page 18).
3. To release the battery from its holder, squeeze the metal clamp that extends above one edge of the
battery. When the battery pops up, lift it out (1).
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4. To insert the new battery, slide one edge of the replacement battery under the holder’s lip with the
positive side up. Push the other edge down until the clamp snaps over the other edge of the battery (2).
5. Replace the base unit front and rear access panels. See Base unit access covers on page 18.
6. Reconnect the power cord and any external devices, and then turn on the computer.
7. Reset the date and time, your passwords, and any special system setups using Computer Setup.
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Hard drive

To locate the hard drive on the system board, see Internal components on page 21.
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear and front access panels (see Base unit access covers on page 18).
3. Pull the release lever at the front of the drive outward (1).
4. Slide the drive back until it stops and lift it out of the drive bay (2).
5. Disconnect the cable from the rear of the hard drive (3).
6. Remove the four mounting screws from the sides of the hard drive that was removed.
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7. Install the four mounting screws that were removed from the old drive in the sides of the new hard drive.
8. Connect the cable to the rear of the hard drive (1). Then align the mounting screws on the drive with the
J-slots on the sides of the drive bay and press the drive into the drive bay. And then slide the drive forward until it locks in place (2).
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Fans

There are two fans in the computer:
(1): Right fan
(2): Left fan
NOTE: The following illustration is shown from the back of the computer.
To remove the fans:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear and front access panels (see Base unit access covers on page 18).
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3. Disconnect the fan cable from the system board (1), and then pull the fan straight up and o the posts
to remove it (2).
Right fan
Left fan
To install the fan, reverse the removal procedures.
Fans 29
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Solid-state drive (M.2)

To locate the M.2 SSD on the system board, see Internal components on page 21.
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear and front access panels (see Base unit access covers on page 18).
3. Remove the left fan (see Fans on page 28).
4. To remove an M.2 SSD, remove the screw that secures the SSD to the system board (1), and then slide
the SSD out of the system board connector (2).
5. To install an M.2 SSD, slide the connector end of the SSD into the system board connector (1), press the
other end of the SSD down (2), and then secure the SSD to the system board with the screw (3).
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Display head rear panel

To remove the display head rear panel:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Grasp the top of the rear panel on the display head at the webcam slot and pull the panel o the display
head at the connection points (1), and then slide the rear cover down the neck of the stand (2).
TIP: If you cannot remove the display head rear panel because it does not t over the stand (varies by
display size), use a thin tool to remove the plastic cover on the rear of the stand neck, then remove the display head rear panel. Note that you cannot completely remove the display head rear panel – it remains connected to the stand after the rear panel is removed from the display panel.
To replace the display head rear panel, reverse the removal procedures.
Display head rear panel 31
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Camera

To replace the camera:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Insert a paper clip into the release holes on each side of the camera (1) to disengage the internal
3. Insert the new webcam into the camera slot on the display head and press the webcam down so that it
latches, and then pull the camera out of the display head (2).
engages the internal latches.
4. Reconnect the power cord and any external devices, and then turn on the computer.
To install a webcam when a camera blank is installed in the camera slot on the display head:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the display head rear panel (see Display head rear panel on page 31).
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3. Remove the screws from the camera blank (1), and then slide the blank back to remove it from the
display head (2).
4. Insert the new camera into the camera slot on the display head and press the camera down so that it
engages the internal latches.
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WLAN module

Description
Intel Dual Band Wireless-AC 7265 NV
Intel Dual Band Wireless-AC 8265 (vPro)
Intel Dual Band Wireless-AC 8265 (non-vPro)
Intel Dual Band Wireless-AC 3168
Realtek RTL8821CE 802.11AC 1x1 Wi-Fi + BT 4.2 Combo Adapter
Intel Centrino Wireless-N 2230
The WLAN module is located on the system board above the memory modules. The WLAN module is secured with one Phillips screw and has two connected antennas.
NOTE: The procedure to replace the WLAN module must be performed by an HP technician.
To remove the WLAN module:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear and front access panels (see Base unit access covers on page 18).
3. Disconnect the antenna cables from the module (1).
4. Remove the Phillips screw (2) that secures the module to the computer.
5. Lift the module to a 45-degree angle, and then pull it away to remove it from the socket (3).
To install the WLAN module, reverse the removal procedures.
When connecting the antennas cables, connect the cable labeled “1” (black sticker) to the AUX “1” connector on the module and the cable labeled “2” (white sticker) to the MAIN “2” connector on the module.
NOTE: WLAN modules are designed with a notch to prevent incorrect insertion.
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Speakers

The speakers are located at the bottom of the computer. Two separate speakers are each secured by two Torx screws.
To remove the speakers:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear and front access panels (see Base unit access covers on page 18).
3. Disconnect the antenna cables from the WLAN module (1).
4. Disconnect the speaker cable from the system board (2).
5. Remove two Torx screws (3) that secure each speaker to the computer.
6. Remove the speakers from the computer (4).
To install the speakers, reverse the removal procedures.
Speakers 35
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Antennas

The antenna cables route from the WLAN module to antennas at the top of the computer. The antennas are secured to the computer with adhesive.
To remove the antennas:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear and front access panels (see Base unit access covers on page 18).
3. Remove the left speaker (see Speakers on page 35).
4. Disconnect the main (1) and auxiliary (2) antenna cables from the WLAN module.
5. Remove the cables from the clips along the routing path (3).
6. Peel the auxiliary (4) and main (5) antennas o the frame.
To install the antenna, reverse the removal procedures.
NOTE: When connecting the antennas cables, be sure to match the numbers on the cable with the same
number printed on the WLAN module.
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Heat sink

Heat sink appearance varies based on processor type and graphics memory.
To remove the heat sink:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear and front access panels (see Base unit access covers on page 18).
3. Remove the fans (see Fans on page 28).
4. On the middle, square part of the heat sink, loosen the captive Torx screws in the order indicated on the
5. Loosen the captive Torx screws on each end of the heat sink (2)
6. Lift the heat sink out of the computer (3).
heat sink (1).
CAUTION: Remove heat sink retaining screws in diagonally opposite pairs (as in an X) to even the
downward forces on the processor. This is especially important as the pins on the socket are very fragile and any damage to them may require replacing the system board.
CAUTION: To reduce a degradation in thermal performance, be sure not to touch the thermal grease
on the surface of the processor or the heat sink.
To replace the heat sink, reverse the removal procedures.
Heat sink 37
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Processor

Description
Intel Core i7-7700 processor
Intel Core i7-6700 processor
Intel Core i5-7600 processor
Intel Core i5-7500 processor
Intel Core i5-6600 processor
Intel Core i5-6500 processor
Intel Core i3-7320 processor
Intel Core i3-7300 processor
Intel Core i3-7100 processor
Intel Core i3-6100 processor
Intel Pentium G4600 processor
Intel Pentium G4620 processor
Intel Pentium G4560 processor
Intel Celeron G3950 processor
Intel Celeron G3930 processor
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear and front access panels (see Base unit access covers on page 18).
3. Remove the fans (see Fans on page 28).
4. Remove the heat sink (see Heat sink on page 37).
5. Rotate the locking lever to its full open position (1).
38 Chapter 4 Removal and replacement procedures
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6. Raise and rotate the microprocessor retainer to its fully open position (2), and then carefully lift the
processor from the socket (3).
CAUTION: Do NOT handle the pins in the processor socket. These pins are very fragile and handling
them could cause irreparable damage. Once pins are damaged it may be necessary to replace the system board.
The heat sink must be installed within 24 hours of installing the processor to prevent damage to the processor’s solder connections.
NOTE: After installing a new processor onto the system board, always update the system ROM to ensure
that the latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at: http://www.hp.com.
Processor 39
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System board

To remove the system board you must rst remove the stand bracket and plastic piece. You must also remove the metal I/O bracket on the side of the system board.
To remove the system board:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 17).
2. Remove the base unit rear and front access panels (see Base unit access covers on page 18).
3. Remove the fans (see Fans on page 28).
4. Remove the memory modules (see Memory on page 22).
5. Remove the WLAN module (see WLAN module on page 34).
6. Remove the heat sink (see Heat sink on page 37).
7. Remove the processor (see Processor on page 38).
8. Remove the two Torx screws (1) that secure the display stand bracket to the computer, and then lift the
bracket out of the computer (2).
9. Lift the stand plastic piece o the system board.
40 Chapter 4 Removal and replacement procedures
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10. Remove the three screws that secure the I/O bracket to the system board.
11. Lift the I/O bracket o the system board.
System board 41
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12. Remove the ve Torx screws that secure the system board to the computer.
13. Rotate the side of the system board upward (1), and the pull it away from the I/O connectors and out of
the computer (2).
To install the system board, reverse the removal procedures.
Replace the thermal pad below the system board.
Updating SMBIOS Information
When replacing the system board, you must reprogram the SMBIOS information on the aected computer. Failure to reprogram the board will result in eventual failure, such as an activation failure (need to reactivate the system) or a system recovery failure.
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To update SMBIOS information in Computer Setup:
1. Turn on or restart the computer.
2. Press Esc while the “Press the ESC key for Startup Menu” message is displayed at the bottom of the
screen.
NOTE: If you do not press Esc at the appropriate time, you must restart the computer and again press
Esc when the power button light turns white to access the utility.
3. Press F10 to enter Computer Setup.
4. Go to Main > Set Machine Unique Data.
5. If necessary, press Ctrl+A to initiate edit mode.
6. Edit the elds listed. If the feature byte has data or is not editable, then it was not cleared and cannot be
edited.
System ID Setup Page
Setup Field Name Comment Label
Product Name Enter the Model name/number or marketing name. Flexbuild
Serial Number Enter the Serial Number of Unit. Support
SKU Number Enter the SKU or Product Number including Localization Code. Support
Asset Tag Enter the 18-byte identier assigned to the computer. Support
Feature Byte Enter the Feature Byte string. The feature byte string is case sensitive.
The label includes spaces after every four characters. You can enter or ignore these spaces – their only purpose is to help with data entry. There is a character limitation of 40 bytes per line. When you reach this limit, go to the next line to continue data entry. BIOS ignores the spaces and lines.
If you make an error during data entry, the data will not validate, and the computer asks you to correct your data input.
Build ID The Build ID of the unit. Flexbuild
Flexbuild
System board 43
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System board callouts

Sys Bd Label Color Component Sys Bd Label Color Component
NTDP1 Black Display connector DIMM1 Black Memory module
NTDP2 Black Display connector WLAN Black WLAN module
XU1 Black Processor socket BAT Black RTC battery
CMOS Yellow Reset CMOS PSWD Black Clear system passwords
SPKR Black Speaker CHFAN Black Fan connector
CPUFAN White Fan connector SSD Black M.2 SSD drive
DIMM3 Black Memory module SATA0 Dark blue Hard drive
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5 Computer Setup (F10) Utility

Computer Setup (F10) Utilities

Use Computer Setup (F10) Utility to do the following:
Change settings from the defaults or restore the settings to default values.
View the system conguration, including settings for processor, graphics, memory, audio, storage, communications, and input devices.
Modify the boot order of bootable devices such as hard drives or USB ash media devices.
Enter the Asset Tag or property identication number assigned by the company to this computer.
Enable the power-on password prompt during system restarts (warm boots) as well as during power-on.
Establish an administrator password that controls access to the Computer Setup (F10) Utility and the settings described in this section.
Establish minimum requirements for valid passwords, including length and required types of characters.
Secure integrated I/O functionality, including the serial, USB, or audio, or embedded NIC, so that they cannot be used until they are unsecured.
Enable or disable dierent types of boot sources.
Congure features such as Secure Boot, power management, virtualization support, and language and keyboard type used in Setup and POST.
Replicate the system setup by saving system conguration information on a USB device and restoring it on one or more computers.
Enable or disable DriveLock security or securely erase a hard drive (when supported by drive).

Using Computer Setup (F10) Utilities

Computer Setup can be accessed only by turning the computer on or restarting the system. To access the Computer Setup Utilities menu, complete the following steps:
1. Turn on or restart the computer.
2. Repeatedly press F10 when the power button light turns white to access the utility.
You can also press Esc to a menu that allows you to access dierent options available at startup, including the Computer Setup utility.
NOTE: If you do not press F10 at the appropriate time, you must restart the computer and again
repeatedly press F10 when the power button light turns white to access the utility.
3. A choice of four headings appears in the Computer Setup Utilities menu: Main, Security, Advanced, and
UEFI Drivers.
NOTE: Selecting UEFI Drivers restarts the computer into the 3rd party option ROM management
application. You can access this application directly by pressing F3 during startup.
Computer Setup (F10) Utilities 45
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4. Use the arrow (left and right) keys to select the appropriate heading. Use the arrow (up and down) keys
to select the option you want, then press Enter. To return to the Computer Setup Utilities menu, press
Esc.
5. To apply and save changes, select Main > Save Changes and Exit.
If you have made changes that you do not want applied, select Ignore Changes and Exit.
To restore settings from the Advanced and Main menus to original values, select Apply Factory Defaults and Exit.
To restore settings from the Advanced and Main menus to those previously saved by Save Custom Defaults
factory defaults are used.
NOTE: Settings in the Security menu are not modied by Apply Defaults. Those values are reset by
Restore Security Settings to Factory Defaults at the bottom of the Security menu.
NOTE: Not all settings shown in the following sections are available for all models
CAUTION: Do NOT turn the computer power OFF while the BIOS is saving the Computer Setup (F10) changes
because the settings could become corrupted. It is safe to turn o the computer only after exiting the F10 Setup screen.
, select Apply Custom Defaults and Exit. If no custom defaults have been saved, then
46 Chapter 5 Computer Setup (F10) Utility
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Computer Setup–Main

NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.
Table 5-1 Computer Setup—Main
Option Description
System Information Lists all information in following list if Advanced System Information is selected. Lists smaller subset if
Basic System Information is selected.
Product name
Installed memory size
Processor type
Processor cache size (L1/L2/L3)
Processor speed
MicroCode revision
Processor stepping
Memory speed
DIMM size (for each installed module)
System BIOS version
ME Firmware version (Intel only)
Video BIOS version
Reference code revision
Super I/O rmware version
USB Type-C controller rmware version
Born on date
Serial number
SKU number
UUID (Universally Unique Identier)
Asset tracking number
Feature byte
Build ID
Product family
System board ID
System board CT number
Panel type
Panel serial number
Integrated MAC Address
System Diagnostics If the hard drive has the HP Advanced Diagnostics installed, the application will launch. If HP Advanced
Diagnostics is not installed, then a basic version built into the BIOS will provide the capability to perform the following functions:
Memory Test
Hard Drive Check
Computer Setup (F10) Utilities 47
Page 56
Table 5-1 Computer Setup—Main (continued)
Option Description
Language
Update System BIOS Lets you update the system BIOS from www.hp.com or another network server, from a removable USB
drive, or from a le located on the hard drive.
Check [current selection] for BIOS Updates
The string that appears here depends on the setting in BIOS Update Preferences.
Lock BIOS Version
If this option is checked, the system is locked to the current BIOS version and updates are not allowed.
BIOS Rollback Policy
Unrestricted Rollback to older BIOS – Lets you roll back to any previous version of BIOS.
Restricted Rollback to older BIOS – If selected, Minimum BIOS Version becomes active, which lets you manually enter the minimum BIOS version that can be rolled back to.
Allow BIOS Updates Using a Network
BIOS Update Preferences
Check for Update on Next Reboot – default is disabled.
BIOS Source – lets you select either HP.com or a custom URL. If Custom URL is selected, Edit Custom URL becomes active. Using a custom URL is recommended only for a managed IT
environment.
Automatic BIOS Update Setting
Allows conguration of a periodic check for updates:
NOTE: If Microsoft Windows BitLocker Drive Encryption (BDE) is enabled, it must be
temporarily suspended before the BIOS is ashed.
Do not update
Check for updates and prompt the user to accept or reject the update at that time
Check for updates and install all new versions
Check for updates and install only new versions marked important
BIOS Update Frequency
Daily
Weekly
Monthly (default)
Network Conguration Settings
Update BIOS Using Local Media
Lets you access les on either USB storage or the hard drive. The HP BIOS Update and Recovery application included in BIOS Softpaqs at www.hp.com will copy the BIOS le to the correct location on the hard drive or USB device.
Change date and time Lets you update system date and time.
Set machine unique data Allows you to set/view data that is unique to each machine such as feature byte, build ID, serial number,
SKU number, product family, system board CT number, and product name.
System IDs Lets you set the following values:
Asset Tracking Number
48 Chapter 5 Computer Setup (F10) Utility
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Table 5-1 Computer Setup—Main (continued)
Option Description
Ownership Tag
Replicated Setup Backup current settings to USB device
Saves system conguration to a formatted USB ash media device.
Restore current settings from USB device
Restores system conguration from a USB ash media device.
Save Custom Defaults Saves the current system conguration settings as the custom default set.
Apply Custom Defaults and Exit
Apply Factory Defaults and Exit
Ignore Changes and Exit Exits Computer Setup without applying or saving any changes.
Save Changes and Exit Saves changes to current system conguration, exits Computer Setup, and reboots.
Suppress POST errors Select to turn o any errors generated by Power On Self Test (POST) during boot up.
Applies the custom default settings to the computer after rebooting. Does not apply to options in the Security menu.
Restores the factory system conguration settings to the computer after rebooting. Does not apply to options in the Security menu.

Computer Setup—Security

NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.
Table 5-2 Computer Setup—Security
Option Description
Create BIOS Administrator Password
Lets you set and enable a BIOS administrator password, which controls access to the following features:
NOTE: Creating a BIOS user disables the Fast Boot option.
NOTE: If the password is set, it is required to change Computer Setup options, update the BIOS, and
make changes to certain plug and play settings under Windows.
Setup Menu (F10)
3rd Party Option ROM Management (F3)
Update system ROM
WMI commands that change system settings
BIOS Conguration Utility (BCU)
Alternative power-on password
Change BIOS Administrator Password
(This selection is active only if a BIOS administrator password is set.)
Create POST Power-On Password
Change POST Power-On Password (This selection
is active only if a BIOS
Lets you change the BIOS administrator password.
You must know the current password to be able to change it.
The power-on password prompt appears after a power cycle or reboot. If the user does not enter the correct power-on password, the unit will not boot.
Lets you change the POST power-on password.
You must know the current password to be able to change it.
Computer Setup (F10) Utilities 49
Page 58
Table 5-2 Computer Setup—Security (continued)
Option Description
administrator password is set.)
Password Policies Let you set the guidelines for a valid password. Options include:
Password minimum length
Requires at least one symbol
Requires at least one number
Requires at least one upper case character
Requires at least one lower case character
Allow spaces
Clear Password Jumper
Select ‘Honor’ to allow or ‘Ignore’ to not allow the absence of the password jumper to clear the passwords at boot up. Default is ‘Honor’.
Security Conguration TPM Embedded Security
TPM Specication Version
Displays the current TPM version.
TPM Device
Lets you set the Trusted Platform Module as available or hidden.
TPM State
Select to enable the TPM.
ClearTPM
Select to reset the TPM to an unowned state. After the TPM is cleared, it is also turned o. To temporarily suspend TPM operations, turn the TPM o instead of clearing it.
CAUTION: Clearing the TPM resets it to factory defaults and turns it o. You will lose all created
keys and data protected by those keys.
TPM Activation Policy
F1 to boot
Allow user to reject
No prompts
BIOS SureStart
Verify Boot Block on every boot – Select to enable HP SureStart.
BIOS Data Recovery Policy – Select ‘Automatic’ or ‘Manual’ to determine data recovery process. Manual recovery is intended only for situations where forensic analysis is desired before HP SureStart recovery. When this policy is set to manual, HP SureStart will not correct any issues that are found until the manual recovery key sequence is input by the local user. This can result in a computer that is unable to boot until the manual recovery key sequence is input.
Dynamic Runtime Scanning of Boot Block. Veries the integrity of the BIOS boot block region several times each hour while the system is running. Default is enabled.
Sure Start BIOS Settings Protection. When enabled, HP Sure Start locks all critical BIOS settings and provides enhanced protection for these settings using non-volatile (ash) memory.
NOTE: An administrator password must be set to activate this setting.
50 Chapter 5 Computer Setup (F10) Utility
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Table 5-2 Computer Setup—Security (continued)
Option Description
Enhanced HP Firmware Runtime Intrusion Prevention and Detection – enables monitoring of HP system rmware executing out of main memory while the operating system is running. Any anomalies detected in HP system rmware that is active while the operating system is running will result in a Sure Start security event being generated.
Sure Start Security Event Policy – controls HP Sure Start behavior upon identifying a critical security event (any modication to HP rmware) while the operating system is running.
Log Event Only – HP Sure Start will log all critical security events in the HP Sure Start audio log within the HP Sure Start non-volatile (ash) memory.
Log Event and notify user – In addition to logging all critical security events, HP Sure Start will notify the user within the operating system that a critical event has occurred.
Log Event and power o system – In addition to logging all critical security events, HP Sure Start will power of the system upon detecting a HP Sure Start Security Event. Due to the potential for data loss, use of this setting is only recommended in situations where security integrity of the system is a higher priority than the risk of potential data loss.
Smart Cover
Cover Removal Sensor (Disabled/Notify user/Administrator password)
Lets you disable the cover sensor or congure what action is taken if the computer cover was removed. Default is ‘Disabled’.
NOTE: Notify user alerts the user with a POST error on the rst boot after the sensor detects removal of
the cover. If the password is set, Administrator Password requires that the password be entered to boot the computer if the sensor detects that the cover has been removed.
Intel Software Guard Extensions (SGX)
Intel SGX is a set of processor code instructions from that allows user-level code to allocate private regions of memory, that unlike normal process memory is also protected from processes running at higher privilege levels.
Software control
Disable
Enable
Utilities Hard Drive Utilities
Save/Restore MBR of System Hard Drive
NOTE: Windows 10 systems are generally not formatted to include an MBR. Instead they use GUID
Partition Table (GPT) format, which better supports large hard drives.
Enabling this feature will save the Master Boot Record (MBR) of the system hard drive. If the MBR gets changed, the user will be prompted to restore the MBR. Default is disabled.
The MBR contains information needed to successfully boot from a disk and to access the data stored on the disk. Master Boot Record Security may prevent unintentional or malicious changes to the MBR, such as those caused by some viruses or by the incorrect use of certain disk utilities. It also allows you to recover the "last known good" MBR, should changes to the MBR be detected when the system is restarted.
NOTE: Most operating systems control access to the MBR of the current bootable disk; the BIOS
cannot prevent changes that may occur while the operating system is running.
Restores the backup Master Boot Record to the current bootable disk. Default is disabled.
Only appears if all of the following conditions are true:
MBR security is enabled
A backup copy of the MBR has been previously saved
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Table 5-2 Computer Setup—Security (continued)
Option Description
The current bootable disk is the same disk from which the backup copy was saved
CAUTION: Restoring a previously saved MBR after a disk utility or operating system has modied
the MBR, may cause the data on the disk to become inaccessible. Only restore a previously saved MBR if you are condent that the current bootable disk's MBR has been corrupted or infected with a virus.
Save/Restore GPT of System Hard Drive
Enabling this feature will save the GUID Partition Table (GPT) of the system hard drive. If the GPT is subsequently changed, the user is prompted to choose whether to restore GPT.
DriveLock/Automatic DriveLock
Allows you to assign or modify a master or user password for hard drives. When this feature is enabled, the user is prompted to provide one of the DriveLock passwords during POST. If neither is successfully entered, the hard drive will remain inaccessible until one of the passwords is successfully provided during a subsequent cold-boot sequence.
NOTE: This selection will only appear when at least one drive that supports the DriveLock feature
is attached to the system.
CAUTION: Be aware that these settings take place immediately. A save is not necessary.
CAUTION: Be sure to document the DriveLock password. Losing a DriveLock password will render a
drive permanently locked.
After you select a drive, the following options are available:
Set DriveLock Master Password. Sets the drive’s master password but does not enable DriveLock.
Enable DriveLock. Sets the drive’s user password and enables DriveLock.
Secure Erase
Lets you select a hard drive to completely erase.
Once a hard drive has been erased with a program that utilizes Secure Erase rmware commands, no le recovery program, partition recovery program, or other data recovery method will be able to extract data from the drive.
Allow OPAL Hard Drive SED Authentication
Default is disabled.
System Management Command
Restore Security Settings to Default
Allows authorized personnel to reset security settings during a service event. Default is enabled.
This action resets security devices, clears BIOS passwords (not including DriveLock), and restores settings in the Security menu to factory defaults.
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Computer Setup—Advanced

NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.
Table 5-3 Computer Setup—Advanced (for advanced users)
Option Heading
Display Language Lets you select the language of the menus in F10 Setup and the keyboard layout.
Scheduled Power-On This feature wakes the system up from a powered o state at a specied date and time.
Boot Options Select the devices that the computer can boot from, as well as other options, including:
NOTE: To drag a device to a preferred place, press Enter.
NOTE: MS-DOS drive lettering assignments may not apply after a non-MS-DOS operating system has
started.
Shortcut to Temporarily Override Boot Order
To boot one time from a device other than the default device specied in Boot Order, restart the computer and press Esc (to access the Startup menu) and then F9 (Boot Menu), or only F9 (skipping the Startup menu) when the power button light turns white. After POST is completed, a list of bootable devices is displayed. Use the arrow keys to select the preferred bootable device and press Enter. The computer then boots from the selected non-default device for this one time.
Startup Delay (sec). Enabling this feature will add a user-specied delay to the POST process. One purpose for the delay is to provide additional time to activate hotkeys such as Esc for the Startup Menu or F10 for Computer Setup.
Fast Boot. Default is enabled for Windows 8.1 or later, and disabled for Windows 7 systems.
USB Storage Boot. Default is enabled.
Network (PXE) Boot. Default is enabled.
After Power Loss. Default is Power O.
Power o—causes the computer to remain powered o when power is restored.
Power on—causes the computer to power on automatically as soon as power is restored.
Previous state—causes the computer to power on automatically as soon as power is restored, if it was on when power was lost.
NOTE: If the system is congured to ‘Power On from Keyboard Ports’ (see Power Management
Options), then this setting is forced to ‘Power On’.
Prompt on Memory Size Change. Default is enabled.
Prompt on Fixed Storage Change. Default is disabled.
Audio Alerts During Boot. Default is enabled. When disabled, most audible beeps from errors, warnings, and password prompts during boot up are suppressed.
UEFI Boot Order.
Default is enabled. Specify the order in which UEFI boot sources (such as a internal hard drive, USB hard drive, USB optical drive, or internal optical drive) are checked for a bootable operating system image.
UEFI boot sources always have precedence over legacy boot sources.
Legacy Boot Order
Specify the order in which legacy boot sources (such as a network interface card, internal hard drive, USB optical drive, or internal optical drive) are checked for a bootable operating system image.
Specify the order of attached hard drives. The rst hard drive in the order will have priority in the boot sequence and will be recognized as drive C (if any devices are attached).
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Table 5-3 Computer Setup—Advanced (for advanced users) (continued)
Option Heading
Secure Boot
Conguration
Congure Legacy Support and Secure Boot
Lets you turn o all legacy support on the computer, including booting to DOS, running legacy graphics cards, booting to legacy devices, and so on.
Lets you make sure an operating system is legitimate before booting to it, making Windows resistant to malicious modication from preboot to full operating system booting, preventing rmware attacks. UEFI and Windows Secure Boot only allow code signed by pre-approved digital certicates to run during the rmware and OS boot process.
Legacy Support Enable and Secure Boot Disable
Legacy Support Disable and Secure Boot Enable
Legacy Support Disable and Secure Boot Disable
Default is ‘Legacy Support Disable and Secure Boot Disable’.
Secure Boot Key Management
Lets you manage the custom key settings.
Import Custom Secure Boot keys
Default is disabled.
Clear Secure Boot Keys
Lets you delete any previously loaded custom boot keys. Clearing keys will disable secure boot. Default is disabled.
Reset Secure Boot keys to factory defaults
Default is disabled.
Enable MS UEFI CA key
Disabling this setting alters the Secure Boot key list to further restrict the allowed software components. Set this option to ‘disable’ to support Device Guard.
Ready BIOS for Device Guard Use
Requires BIOS Administrator password to be congured and Secure Boot to be enabled.
System Options Congure storage controller for Intel Optane
Enables the Intel Optane memory module.
Hyperthreading
Lets you control processor capability. Default is enabled.
Multi-processor
Use this option to disable multi-processor support under the operating system. Default is enabled.
Virtualization Technology (VTx) (Intel only)
Controls the virtualization features of the processor. Changing this setting requires turning the computer o and then back on. Default is disabled.
Virtualization Technology for Directed I/O (VTd) (Intel only)
Controls virtualization DMA remapping features of the chipset. Changing this setting requires turning the computer o and then back on. Default is disabled.
M.2 SSD
Lets you disable the M.2 solid-state drive slot. Default is enabled.
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Table 5-3 Computer Setup—Advanced (for advanced users) (continued)
Option Heading
M.2 WLAN/BT
Lets you disable the wireless module slot. Default is enabled.
Allow PCIe/PCI SERR# Interrupt (enable/disable)
Allows PCI devices to report PCI/PCIe System Error signals, such as address parity errors, data parity errors, and critical errors other than parity. Default is enabled.
Power Button Override (disable/4 sec/15 sec)
Lets you disable or enable and select the number of seconds you have to hold down the power button for it to force the system to power o. Default is ‘4 sec’.
Built-In Device Options Embedded LAN Controller
Select to show the device in the operating system. Default is enabled.
Wake On LAN
Lets you either disable the Wake On LAN feature, or congure where the computer boots, including the network or hard drive. Default is Boot to Network.
Allow No Panel conguration
When enabled, POST blink and beep codes and error messages are not generated. Default is disabled.
Video memory size
Use this option to manage graphics memory allocation. The value you choose is allocated permanently to graphics and is unavailable to the operating system.
Integrated Camera
Clear to disable the integrated camera. Default is enabled.
Audio Device
Select to show the device in the operating system. Default is enabled.
Integrated Microphone
Clear to disable the integrated microphone. This does not aect devices plugged into audio jacks. Default is enabled.
Internal Speakers (does not aect external speakers)
Clear to disable the chassis speaker or speakers. This function is applicable to normal audio playback in the operating system and does not aect the error or warning beeps during POST. Default is enabled.
Headphone Output
Clear to disable the headphone jack. Default is enabled.
Collaboration Buttons
Clear to disable the collaboration buttons. Default is enabled.
Button Sensitivity
Select from low, medium, or high. Default is low.
LAN/WLAN auto switching
Select to enable auto switching between a wired and wireless connection. Default is disabled.
Wake on WLAN
Select to enable wake on WLAN. Default is disabled.
M.2 USB/Bluetooth
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Table 5-3 Computer Setup—Advanced (for advanced users) (continued)
Option Heading
Select to enable the M.2 controller. Default is enabled.
Increase Idle Fan Speed(%)
Sets idle fan speed percentage. This setting only changes the minimum fan speed. The fan is still automatically controlled.
Port Options SATA0
Lets you disable the connector. Default is enabled.
SATA1
Lets you disable the connector. Default is enabled.
Rear USB ports
Lets you disable the ports. Default is enabled.
Right USB ports
Lets you disable the ports. Default is enabled.
USB Legacy Port Charging
Lets you enable USB charging port capability when the computer is in hibernate or shutdown mode. Default is enabled.
USB Type-C Downstream Charging
Lets you enable USB charging port capability when the computer is in hibernate or shutdown mode. Default is enabled.
Restrict USB Devices
Specify the following categories of USB devices to enable:
Allow all USB devices (default)
Allow only keyboard and mouse
Allow all but storage devices and hubs.
When some devices are restricted, the system will disable USB ports that do not meet the allowed criteria. This feature is usually combined with similar policies within the operating system since USB devices can be moved to dierent ports. The ports disabled by the BIOS will remain disabled until the system is restarted.
USB Type-C Controller Firmware Update
Default is enabled.
Option ROM Launch Policy
Power Management Options
These policies control whether Legacy Option ROMs or UEFI drivers are loaded. Default is ‘All legacy’ for Windows 7 and other non-Windows congurations. Default is ‘All UEFI’ for Windows 8.1 or later.
Congure Option ROM Launch Policy
All legacy
All UEFI
All UEFI except video
Runtime Power Management (enable/disable)
Allows certain operating systems to reduce processor voltage and frequency when the current software load does not require the full capabilities of the processor. Default is enabled.
Extended Idle Power States (enable/disable)
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Table 5-3 Computer Setup—Advanced (for advanced users) (continued)
Option Heading
Allows certain operating systems to decrease the processors power consumption when the processor is idle. Default is enabled.
S5 Maximum Power Savings (enable/disable)
Enabling this feature reduces the power of the system as much as possible in the S5 state. Power is removed from the wake up circuitry, the expansion slots, and any management features while in S5. Default is disabled.
SATA Power Management (enable/disable)
Enables or disables SATA bus and/or device power management. Default is enabled.
PCI Express Power Management (enable/disable)
Enabling this option permits the PCI Express links to use Active Power State Management (ASPM) to enter lower power states while not in use. Default is enabled.
Power On from Keyboard Ports (enable/disable)
When enabled, this feature allows a key press to power on the system when it is o (S5 state). If using a USB keyboard, it must be plugged into one of the rear ports labeled with the keyboard icon. Default is disabled.
Unique Sleep State Blink Rates (enable/disable)
This feature is designed to provide a visual indication of what sleep state the system is in. Each sleep state has a unique blink pattern. Default is disabled.
NOTE: A normal shutdown goes to the S4 state for Windows 8 or later.
S0 (On) = Solid white LED.
S3 (Stand By)= 3 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds (white LED) — repeated cycles of 3 blinks and a pause.
S4 (Hibernation)= 4 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds (white LED) — repeated cycles of 4 blinks and a pause.
S5 (Soft O) = LED is o.
Electronic labels Displays system labels.
Remote Management Options
Active Management (AMT) (Intel only) (enable/disable). Default is enabled.
Allows you to discover, repair, and protect networked computing devices.
USB Key Provisioning Support (enable/disable) Default is disabled.
USB Redirection Support (enable/disable). Default is enabled.
USB redirection allows USB devices plugged into a client computer to be transparently redirected to the guest operating system.
Uncongure AMT on next boot (Do Not Apply/Apply). Default is ‘Do Not Apply’.
SOL Terminal Emulation Mode (ANSI / VT100). Default is ANSI.
SOL terminal emulation mode is only activated during remote AMT redirection operations. The emulation options allow administrators to select which mode works best with their console.
Show Uncongure ME Conrmation Prompt (enable/disable). Default is enabled.
Verbose Boot Messages (enable/disable). Default is enabled.
Verbose boot shows additional logging information during the boot. mainly for debugging if something goes wrong during bootup.
Watchdog Timer (enable/disable). Default is enabled.
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Table 5-3 Computer Setup—Advanced (for advanced users) (continued)
Option Heading
Allows you to set amount of time for a operating system and BIOS watchdog alert to be sent if the timers are not deactivated. BIOS watchdog is deactivated by BIOS and would indicate that a halt occurred during execution if the alert is sent to the management console. An operating system alert is deactivated by the operating system image and would indicate that a hang occurred during its initialization.
OS Watchdog Timer (min.) – (5/10/15/20/25). Default is 5 min.
BIOS Watchdog Timer (min.) – (5/10/15/20/25). Default is 5 min.
CIRA Timeout (min.) (1/2/3/4/Never)
CIRA is Customer Initiated Remote Assistance, an Intel service to help users employing Active Management Technology (AMT).
Recovering the conguration settings
This method of recovery requires that you rst perform the Save to Removable Media command with the Computer Setup (F10) Utility before Restore is needed. (See Computer Setup–Main on page 47 in the Computer Setup—File table.)
The Save to Removable Media option creates a le named HPSETUP.TXT on an inserted USB ash media device. This le can be edited to change the settings on Restore. An asterisk (*) marks the selected option for a setting.
NOTE: It is recommended that you save any modied computer conguration settings to a USB ash media
device and save the device for possible future use.
To restore the conguration, insert the USB ash media device with the saved conguration and perform the Restore from Removable Media command with the Computer Setup (F10) Utility. (See Computer Setup–Main
on page 47 in the Computer Setup—File table.)
58 Chapter 5 Computer Setup (F10) Utility
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6 Using HP PC Hardware Diagnostics (UEFI)

HP PC Hardware Diagnostics is a Unied Extensible Firmware Interface (UEFI) that allows you to run diagnostic tests to determine whether the computer hardware is functioning properly. The tool runs outside the operating system so that it can isolate hardware failures from issues that are caused by the operating system or other software components.
When HP PC Hardware Diagnostics (UEFI) detects a failure that requires hardware replacement, a 24-digit Failure ID code is generated. This ID code can then be provided to support to help determine how to correct the problem.
NOTE: To start diagnostics on a convertible computer, your computer must be in notebook mode and you
must use the keyboard attached.
To start HP PC Hardware Diagnostics (UEFI), follow these steps:
1. Turn on or restart the computer, and quickly press esc.
2. Press f2.
The BIOS searches three places for the diagnostic tools, in the following order:
a. Connected USB drive
NOTE: To download the HP PC Hardware Diagnostics (UEFI) tool to a USB drive, see Downloading
HP PC Hardware Diagnostics (UEFI) to a USB device on page 59.
b. Hard drive
c. BIOS
3. When the diagnostic tool opens, select the type of diagnostic test you want to run, and then follow the
on-screen instructions.
NOTE: If you need to stop a diagnostic test, press esc.

Downloading HP PC Hardware Diagnostics (UEFI) to a USB device

NOTE: The HP PC Hardware Diagnostics (UEFI) download instructions are provided in English only, and you
must use a Windows computer to download and create the HP UEFI support environment because only .exe les are oered.
There are two options to download HP PC Hardware Diagnostics to a USB device.
Download the latest UEFI version
1. Go to http://www.hp.com/go/techcenter/pcdiags. The HP PC Diagnostics home page is displayed.
2. In the HP PC Hardware Diagnostics section, select the Download link, and then select Run.
Download any version of UEFI for a specic product
1. Go to http://www.hp.com/support.
2. Select Get software and drivers.
3. Enter the product name or number.
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device 59
Page 68
4. Select your computer, and then select your operating system.
5. In the Diagnostic section, follow the on-screen instructions to select and download the UEFI version
you want.

Using Remote HP PC Hardware Diagnostics (UEFI) settings (select products only)

Your computer supports Remote HP PC Hardware Diagnostics (UEFI). This is a rmware (BIOS) feature that downloads HP PC Hardware Diagnostics UEFI to your computer.
It executes the diagnostics on your computer, and then may upload results to a precongured server.
Using the Remote HP PC Hardware Diagnostics setting in Computer Setup (BIOS), you can perform the following customizations:
Set a schedule for running diagnostics unattended. You can also start diagnostics immediately in interactive mode by selecting Execute Remote HP PC Hardware Diagnostics.
Set the location for downloading the diagnostic tools. This feature provides access to the tools from the HP website or from a server that has been precongured for use. Your computer does not require the traditional local storage (such as a disk drive or USB ash drive) to run remote diagnostics.
Set a location for storing the test results. You can also set the user name and password settings used for uploads.
Display status information about the diagnostics run previously.

Customizing Remote HP PC Hardware Diagnostics (UEFI) settings

1. Turn on or restart the computer, and when the HP logo appears, press f10 to enter Computer Setup.
2. Select Advanced, and then select Settings.
3. Make your customization selections.
4. Select Main, and then Save Changes and Exit to save your settings.
Your changes take eect when the computer restarts.
To access documentation on using Remote HP PC Hardware Diagnostics (UEFI) to congure a server for remote diagnostics or to customize which diagnostic tests are run, go to http://www.hp.com/support. Select Find your product, and then follow the on-screen instructions.
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7 Troubleshooting without diagnostics

This chapter provides information on how to identify and correct minor problems, such as USB devices, hard drive, optical drive, graphics, audio, memory, and software problems. If you encounter problems with the computer, refer to the tables in this chapter for probable causes and recommended solutions.
NOTE: For information on specic error messages that may appear on the screen during Power-On Self-Test
(POST) at startup, refer to POST error messages and diagnostic front panel LEDs and audible codes
on page 86.

Safety and comfort

WARNING! Misuse of the computer or failure to establish a safe and comfortable work environment may
result in discomfort or serious injury. Refer to the Safety & Comfort Guide at http://www.hp.com/ergo for more information on choosing a workspace and creating a safe and comfortable work environment. For more information, refer to the Safety & Regulatory Information guide.

Before you call for technical support

If you are having problems with the computer, try the appropriate solutions below to try to isolate the exact problem before calling for technical support.
Run the HP diagnostic tool.
Run the hard drive self-test in Computer Setup. Refer to Computer Setup (F10) Utility on page 45 for more information.
Check the Power LED on the front of the computer to see if it is ashing red. The ashing lights are error codes that will help you diagnose the problem. Refer to POST error messages and diagnostic front panel
LEDs and audible codes on page 86 for more information.
If you are working on a network, plug another computer with a dierent cable into the network connection. There may be a problem with the network plug or cable.
If you recently added new hardware, remove the hardware and see if the computer functions properly.
If you recently installed new software, uninstall the software and see if the computer functions properly.
Boot the computer to the Safe Mode to see if it will boot without all of the drivers loaded. When booting the operating system, use “Last Known Conguration.”
Refer to the comprehensive online technical support at http://www.hp.com/support.
Refer to Helpful hints on page 62 in this guide.
To assist you in resolving problems online, HP Instant Support Professional Edition provides you with self­solve diagnostics. If you need to contact HP support, use HP Instant Support Professional Edition's online chat feature. Access HP Instant Support Professional Edition at: http://www.hp.com/go/ispe.
Access the Business Support Center (BSC) at http://www.hp.com/go/bizsupport for the latest online support information, software and drivers, proactive notication, and worldwide community of peers and HP experts.
If it becomes necessary to call for technical assistance, be prepared to do the following to ensure that your service call is handled properly:
Safety and comfort 61
Page 70
Be in front of your computer when you call.
Write down the computer serial number and product ID number before calling.
Spend time troubleshooting the problem with the service technician.
Remove any hardware that was recently added to your system.
Remove any software that was recently installed.
Restore the system from the Recovery Disc Set that you created or restore the system to its original factory condition in System Software Requirement Disks (SSRD).
CAUTION: Restoring the system will erase all data on the hard drive. Be sure to back up all data les before
running the restore process.
NOTE: For sales information and warranty upgrades (Care Packs), call your local authorized service provider
or dealer.

Helpful hints

If you encounter problems with the computer or software, see the following list of general suggestions before taking further action:
Check that the computer is plugged into a working electrical outlet.
Check that the computer is turned on and the white power light is on.
Check the power LED on the front of the computer to see if it is ashing red. The ashing lights are error codes that will help you diagnose the problem. Refer to POST error messages and diagnostic front panel
LEDs and audible codes on page 86 for more information.
Press and hold any key. If the system beeps, then the keyboard should be operating correctly.
Check all cable connections for loose connections or incorrect connections.
Wake the computer by pressing any key on the keyboard or pressing the power button. If the system remains in suspend mode, shut down the computer by pressing and holding the power button for at least four seconds then press the power button again to restart the computer. If the system will not shut down, unplug the power cord, wait a few seconds, then plug it in again. The computer will restart if it is set to power on automatically as soon as power is restored in Computer Setup. If it does not restart, press the power button to start the computer.
Be sure that all the needed device drivers have been installed. For example, if you are using a printer, you need a driver for that model printer.
Remove all bootable media (such as a USB device) from the system before turning it on.
If you have installed an operating system other than the factory-installed operating system, check to be sure that it is supported on the system.
CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the
system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
62 Chapter 7 Troubleshooting without diagnostics
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Solving general problems

You may be able to easily resolve the general problems described in this section. If a problem persists and you are unable to resolve it yourself or if you feel uncomfortable about performing the operation, contact an authorized dealer or reseller.
WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system
board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching.
Cannot access the Computer Setup (F10) Utility when booting the computer.
Cause Solution
The Computer Setup (F10) Utility is set to “fast boot” causing the F10 access screen to display too briey when booting the computer.
Computer appears locked up and will not turn o when the power button is pressed.
Cause Solution
Software control of the power switch is not functional. 1. Press and hold the power button for at least four seconds
Computer will not respond to keyboard or mouse.
Cause Solution
Computer is in Sleep state. To resume from Sleep state, press the power button.
Before turning on the computer, press and hold F10. Turn on the computer and continue to hold F10 until the Computer Setup (F10) Utility is displayed.
- or –
Follow the Windows instructions for rebooting the computer into the Computer Setup (F10) Utility.
until the computer turns o.
2. Disconnect the power cord from the electrical outlet.
CAUTION: When attempting to resume from Sleep state, do not
hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data.
System has locked up. Restart computer.
USB cables may not be seated properly. Disconnect, then reconnect USB cables to keyboard and mouse.
Computer date and time display is incorrect.
Cause Solution
RTC (real-time clock) battery may need to be replaced.
NOTE: Connecting the computer to a live AC outlet prolongs the
life of the RTC battery.
Reset the date and time under Control Panel (Computer Setup can also be used to update the RTC date and time). If the problem persists, replace the RTC battery. See the Removal and Replacement section for instructions on installing a new battery, or contact an authorized dealer or reseller for RTC battery replacement.
Solving general problems 63
Page 72
Computer date and time display is incorrect.
Cause Solution
To access Control Panel in Windows 7, select Start, and then select Control Panel.
To access Control Panel in Windows 10, type control panel in the taskbar search box, and then select Control Panel.
There is no sound or sound volume is too low.
Cause Solution
System volume may be set low or muted. 1. Check the front panel to see if an amber light indicates the
system has been muted. Tap the touch-sensitive button to toggle the mute on and o.
2. Check the Computer Setup settings to make sure the
internal system speaker is not muted (this setting does not aect the external speakers).
3. Make sure the external speakers are properly connected and
powered on and that the speakers' volume control is set correctly.
4. Use the system volume control available in the operating
system to make sure the speakers are not muted or to increase the volume.
Cannot remove computer cover or access panel.
Cause Solution
Smart Cover Lock, featured on some computers, is locked. Unlock the Smart Cover Lock using Computer Setup.
In case of forgotten password, power loss, or computer malfunction, you must manually disable the Smart Cover lock . A key to unlock the Smart Cover Lock is not available from HP. Keys are typically available from a hardware store.
Poor performance.
Cause Solution
Processor is too hot. 1. Make sure airow to the computer is not blocked. Leave a
10.2-cm (4-inch) clearance on all vented sides of the computer to permit the required airow.
2. Make sure fans are connected and working properly (some
fans only operate when needed).
3. Make sure the processor heat sink is installed properly.
Hard drive is full. Transfer data from the hard drive to create more space on the
hard drive.
Low on memory. Add more memory.
Hard drive fragmented. Defragment hard drive.
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Poor performance.
Cause Solution
Program previously accessed did not release reserved memory back to the system.
Virus resident on the hard drive. Run virus protection program.
Too many applications running. 1. Close unnecessary applications to free up memory.
Restart the computer.
2. Add more memory.
3. Some applications run in the background and can be closed
by right-clicking on their corresponding icons in the task tray. To prevent these applications from launching at startup:
In Windows 7:
a. Go to Start > All Programs > Accessories > Run
b. Type msconfig, and then press Enter.
c. On the Startup tab of the System Conguration Utility,
clear applications that you do not want to launch automatically, and the click OK.
In Windows 10:
a. Type msconfig in the taskbar search box, and then
select mscong.
b. On the Startup tab of the System Conguration Utility,
click Open Task Manager.
c. Select applications that you do not want to launch
automatically, and the click Disable.
Some software applications, especially games, are stressful on the graphics subsystem.
Cause unknown. Restart the computer.
Computer powered o automatically and the Power LED ashes red four times and then white two times.
Cause Solution
Processor thermal protection activated:
A fan may be blocked or not turning.
OR
The heat sink is not properly attached to the processor.
1. Lower the display resolution for the current application or
consult the documentation that came with the application for suggestions on how to improve performance by adjusting parameters in the application.
2. Add more memory.
3. Upgrade the graphics solution.
1. Ensure that the computer air vents are not blocked and the
processor cooling fan is running.
2. Open the access panel, press the power button, and see if
the processor fan (or other system fan) spins. If the fan does not spin, make sure the fan cable is plugged onto the system board header.
3. If fan a plugged in and not spinning, replace it.
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System does not power on and the LEDs on the front of the computer are not ashing.
Cause Solution
System unable to power on. Press and hold the power button for less than 4 seconds. If the
hard drive LED turns white, then:
1. If equipped with a voltage selector, check that the voltage
selector (located on the rear of the power supply) is set to the appropriate voltage. Proper voltage setting depends on your region.
2. Remove the expansion cards one at a time until the 5V_aux
light on the system board turns on.
3. Replace the system board.
OR
Press and hold the power button for less than 4 seconds. If the hard drive LED does not turn on white then:
1. Check that the unit is plugged into a working AC outlet.
2. Open the access panel and check that the power button
cable is properly connected to the system board.
3. Check that the power supply cables are properly connected
to the system board.
4. Check to see if the 5V_aux light on the system board is
turned on. If it is turned on, then replace the power button assembly.
5. If the 5V_aux light on the system board is o, then replace
the power supply.
6. Replace the system board.

Solving power problems

Common causes and solutions for power problems are listed in the following table.
Power supply shuts down intermittently.
Cause Solution
If equipped with a voltage selector, voltage selector switch on rear of computer chassis (some models) not switched to correct line voltage (115V or 230V).
Power supply will not turn on because of internal power supply fault.
Computer powered o automatically and the Power LED ashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. (Beeps stop after fth iteration but LEDs continue ashing.)
Computer powered o automatically and the Power LED ashes red four times and then white two times.
Cause Solution
Processor thermal protection activated: 1. Ensure that the computer air vents are not blocked and the
Select the proper AC voltage using the selector switch.
Replace the power supply.
processor cooling fan is running.
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Computer powered o automatically and the Power LED ashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. (Beeps stop after fth iteration but LEDs continue ashing.)
Computer powered o automatically and the Power LED ashes red four times and then white two times.
Cause Solution
A fan may be blocked or not turning.
OR
The heat sink is not properly attached to the processor.
Power LED ashes Red four times, once every second, followed by a two second pause, and the computer beeps four times. (Beeps stop after fth iteration but LEDs continue ashing.)
Computer powered o automatically and the Power LED ashes red three times and then white four times.
Cause Solution
Power failure (power supply is overloaded). 1. If equipped with a voltage selector, check that the voltage
2. Open the access panel, press the power button, and see if
the processor fan (or other system fan) spins. If the fan does not spin, make sure the fan cable is plugged onto the system board header.
3. If fan a plugged in and not spinning, replace it.
selector, located on the rear of the power supply (some models), is set to the appropriate voltage. Proper voltage setting depends on your region.
2. Open the access panel and ensure the power supply cable is
seated into the connector on the system board.
3. Check if a device is causing the problem by removing ALL
attached devices (such as hard drives or optical drives and expansion cards). Power on the system. If the system enters POST, then power o and replace one device at a time and repeat this procedure until failure occurs. Replace the device that is causing the failure. Continue adding devices one at a time to ensure all devices are functioning properly.
4. Replace the power supply.
5. Replace the system board.

Solving hard drive problems

Hard drive error occurs.
Cause Solution
Hard disk has bad sectors or has failed. 1. In Windows 7, click Start, click Computer, and right-click on
a drive. Select Properties, and then select the Tools tab. Under Error-checking click Check Now.
In Windows 10, type file in the taskbar search box, and then select File Explorer from the list of applications. In the left column, expand This PC, right-click on a drive, select
Properties, and then select the Tools tab. Under Error checking click Check.
2. Use a utility to locate and block usage of bad sectors. If
necessary, reformat the hard disk.
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Disk transaction problem.
Cause Solution
Either the directory structure is bad or there is a problem with a
le.
Drive not found (identied).
Cause Solution
Cable could be loose. Check cable connections.
The system may not have automatically recognized a newly installed device.
The device is attached to a SATA port that has been hidden in Computer Setup.
In Windows 7, click Start, expand Computer, and right-click on a drive. Select Properties, and then select the Tools tab. Under Error-checking click Check Now.
In Windows 10, type file in the taskbar search box, and then select File Explorer from the list of applications. In the left column, expand This PC, right-click on a drive, select Properties, and then select the Tools tab. Under Error checking click Check.
See reconguration directions in the Solving hardware installation
problems on page 72 section. If the system still does not
recognize the new device, check to see if the device is listed within Computer Setup. If it is listed, the probable cause is a driver problem. If it is not listed, the probable cause is a hardware problem.
If this is a newly installed drive, run the Computer Setup utility and try adding a POST delay under Advanced > Boot Options.
Run the Computer Setup utility and ensure Device Available is selected for the device's SATA port in Advanced > Port Options.
Drive responds slowly immediately after power-up. Run Computer Setup and increase the POST Delay in Advanced >
Boot Options.
Nonsystem disk/NTLDR missing message.
Cause Solution
The system is trying to start from the hard drive but the hard drive may have been damaged.
System les missing or not properly installed. 1. Insert bootable media and restart the computer.
Hard drive boot has been disabled in Computer Setup. Run the Computer Setup utility and enable the hard drive entry in
Bootable hard drive is not attached as rst in a multi-hard drive
conguration.
Bootable hard drive is not listed rst in the Boot Order. Run the Computer Setup utility and select Advanced > Boot
Perform Drive Protection System (DPS) testing in system
ROM.
2. Boot to the windows installation media and select the
recovery option. If only a restore kit is available, then select the File Backup Program option, and then restore the system.
3. Install system les for the appropriate operating system.
the Advanced > Boot Options list.
If attempting to boot from a hard drive, ensure it is attached to the system board dark blue SATA connector.
Options and ensure the bootable hard drive is listed immediately under the Hard Drive entry.
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Computer will not boot from hard drive.
Cause Solution
The device is attached to a SATA port that has been hidden in Computer Setup.
Boot order is not correct. Run the Computer Setup utility and change boot sequence in
Hard drive is damaged. Observe if the front panel Power LED is blinking RED and if any
Computer seems to be locked up.
Cause Solution
Program in use has stopped responding to commands. 1. Use the task manager to close programs that do not
1. Check SATA cable connections.
2. Run the Computer Setup utility and ensure Device Available
is selected for the device's SATA port in Advanced > Port Options.
Advanced > Boot Options.
beeps are heard. See POST error messages and diagnostic front
panel LEDs and audible codes on page 86 to determine possible
causes for the blinking red and beep codes.
See the Worldwide Limited Warranty for terms and conditions.
respond.
2. Attempt the normal Windows “Shut Down” procedure. If this
fails, press the power button for four or more seconds to turn o the power. To restart the computer, press the power button again.

Solving audio problems

If the computer has audio features and you encounter audio problems, see the common causes and solutions listed in the following table.
Sound cuts in and out.
Cause Solution
Processor resources are being used by other open applications. Shut down all open processor-intensive applications.
Sound does not come out of the speaker or headphones.
Cause Solution
Software volume control is turned down or muted. Double-click the Speaker icon on the taskbar, then make sure
Audio is hidden in Computer Setup. Enable the audio in Computer Setup: Advanced > Built-in Device
The external speakers are not turned on. Turn on the external speakers.
that Mute is not selected and use the volume slider to adjust the volume. This can also be performed using the touch-sensitive buttons on the front of the computer.
Options.
Solving audio problems 69
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Sound does not come out of the speaker or headphones.
Cause Solution
Headphones or devices connected to the line-out connector mute the internal speaker.
Computer is in Sleep state. Press the power button to resume from Sleep state.
Internal speaker is disabled in Computer Setup. Enable the internal speaker in Computer Setup. Select Advanced >
Some applications can select which audio output device is used. Make sure the application has selected the correct audio device.
The operating system controls may be set to use a dierent audio device as the default output device than what is expected.
Computer appears to be locked up while recording audio.
Cause Solution
The hard disk may be full. Before recording, make sure there is enough free space on the
Turn on and use headphones or external speakers, if connected, or disconnect headphones or external speakers.
CAUTION: When attempting to resume from Sleep state, do not
hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data.
Built-in Device Options.
Set the operating system to use the correct audio device.
hard disk. You can also try recording the audio le in a compressed format.
Line-in jack is not functioning properly.
Cause Solution
Jack has been recongured in the audio driver or application software.

Solving printer problems

If you encounter printer problems, see the documentation that came with the printer and to the common causes and solutions listed in the following table.
Printer will not print.
Cause Solution
Printer is not turned on and online. Turn the printer on and make sure it is online.
The correct printer drivers for the application are not installed. 1. Install the correct printer driver for the application.
In the audio driver or application software, recongure the jack or set the jack to its default value.
2. Try printing using the MS-DOS command:
DIR C:\ > [printer port]
where [printer port] is the address of the printer being used. If the printer works, reload the printer driver.
To run MS-DOS commands, press the Windows key + r, type cmd in the Open box, and then click OK.
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Printer will not print.
Cause Solution
If you are on a network, you may not have made the connection to the printer.
Printer may have failed. Run printer self-test.
Printer will not turn on.
Cause Solution
The cables may not be connected properly. Reconnect all cables and check the power cord and electrical
Printer prints garbled information.
Cause Solution
The correct printer driver for the application is not installed. Install the correct printer driver for the application.
The cables may not be connected properly. Reconnect all cables.
Printer memory may be overloaded. Reset the printer by turning it o for one minute, then turn it back
Make the proper network connections to the printer.
outlet.
on.
Printer will not print.
Cause Solution
The printer may be out of paper. Check the paper tray and rell it if it is empty.

Solving keyboard and mouse problems

If you encounter keyboard or mouse problems, see the documentation that came with the equipment and to the common causes and solutions listed in the following table.
Keyboard commands and typing are not recognized by the computer.
Cause Solution
Keyboard connector is not properly connected. Shut down the computer, reconnect the keyboard, and then
restart the computer.
Program in use has stopped responding to commands. Shut down your computer using the mouse and then restart the
computer.
Keyboard needs repairs. See the Worldwide Limited Warranty for terms and conditions.
Computer is in Sleep state. Press the power button to resume from Sleep state.
CAUTION: When attempting to resume from Sleep date, do not
hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data.
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Mouse does not respond to movement or is too slow.
Cause Solution
Mouse connector is not properly plugged into the back of the computer.
Program in use has stopped responding to commands. Shut down the computer using the keyboard then restart the
Mouse may need repair. See the Worldwide Limited Warranty for terms and conditions.
Computer is in Sleep state. Press the power button to resume from Sleep state.
Shut down the computer using the keyboard.
Windows 7:
1. Press the Ctrl and Esc keys at the same time (or press the Windows logo key) to display the Start menu.
2. Use the arrow keys to select Shut Down and then press
Enter.
3. After the shutdown is complete, plug the mouse connector
into the back of the computer (or the keyboard) and restart.
Windows 10:
1. Press the Ctrl and Esc keys at the same time (or press the Windows logo key) to display the Start menu.
2. Use the arrow keys to scroll to and select the power icon at
the top right on the menu, and then press Enter.
3. Use the arrow keys to select Shut Down, and then press
Enter.
4. After the shutdown is complete, plug the mouse connector
into the back of the computer (or the keyboard) and restart.
computer.
CAUTION: When attempting to resume from Sleep state, do not
hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data.
If using a wireless mouse, you may need resynchronize the mouse with the computer.
Follow the instructions that came with the mouse.

Solving hardware installation problems

You may need to recongure the computer when you add or remove hardware, such as an additional drive or expansion card. If you install a plug and play device, Windows automatically recognizes the device and congures the computer. If you install a non-plug and play device, you must recongure the computer after completing installation of the new hardware. In Windows, use the Add Hardware Wizard and follow the instructions that appear on the screen.
To open the Add Hardware Wizard, open a Command Prompt and open hdwwiz.exe.
WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system
board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching.
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A new device is not recognized as part of the system.
Cause Solution
Cable(s) of new external device are loose or power cables are unplugged.
Power switch of new external device is not turned on. Turn o the computer, turn on the external device, then turn on
When the system advised you of changes to the conguration, you did not accept them.
A plug and play board may not automatically congure when added if the default conguration conicts with other devices.
USB ports on the computer are disabled in Computer Setup. Run the Computer Setup utility and ensure that Device available
Computer will not start.
Cause Solution
Ensure that all cables are properly and securely connected and that pins in the cable or connector are not bent down.
the computer to integrate the device with the computer system.
Reboot the computer and follow the instructions for accepting the changes.
Use Windows Device Manager to deselect the automatic settings for the board and choose a basic conguration that does not cause a resource conict. You can also use Computer Setup to recongure or disable devices to resolve the resource conict.
To access Device Manager in Windows 7, click Start, select Control Panel, and then select Device Manager.
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device Manager from the list of applications.
is selected for appropriate USB ports under Advanced > Port Options.
Wrong memory modules were used in the upgrade or memory modules were installed in the wrong location.
Power LED ashes Red three times and then white two times.
Cause Solution
Memory is installed incorrectly or is bad. CAUTION: To avoid damage to the DIMMs or the system board,
1. Review the documentation that came with the system to
determine if you are using the correct memory modules and to verify the proper installation.
NOTE: DIMM1 or XMM1 must always be installed. DIMM1
must be installed before DIMM3.
2. Observe the beeps and LED lights on the front of the
computer. Beeps and ashing LEDs are codes for specic problems.
3. If you still cannot resolve the issue, contact Customer
Support.
you must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module.
1. Reseat DIMMs. Power on the system.
2. Replace DIMMs one at a time to isolate the faulty module.
NOTE: DIMM1 or XMM1 must always be installed. DIMM1
must be installed before DIMM3.
3. Replace third-party memory with HP memory.
Solving hardware installation problems 73
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Power LED ashes Red three times and then white two times.
Cause Solution

Solving network problems

Some common causes and solutions for network problems are listed in the following table. These guidelines do not discuss the process of debugging the network cabling.
Network driver does not detect network controller.
Cause Solution
Network controller is disabled. 1. Run Computer Setup and enable network controller.
4. Replace the system board.
2. Enable the network controller in the operating system using
Device Manager.
To access Device Manager in Windows 7, click Start, select Control Panel, and then select Device Manager.
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device Manager from the list of applications.
Incorrect network driver. Check the network controller documentation for the correct driver
or obtain the latest driver from the manufacturer’s Web site.
Network status link light never ashes.
NOTE: The network status light is supposed to ash when there is network activity.
Cause Solution
No active network is detected. Check cabling and network equipment for proper connection.
Network controller is not set up properly. Check for the device status within Windows, such as Device
Manager for driver load and the Network Connections applet within Windows for link status.
To access Device Manager in Windows 7, click Start, select Control Panel, and then select Device Manager.
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device Manager from the list of applications.
Network controller is disabled. 1. Run Computer Setup and enable network controller.
2. Enable the network controller in the operating system using
Device Manager.
To access Device Manager in Windows 7, click Start, select Control Panel, and then select Device Manager.
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device Manager from the list of applications.
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Network status link light never ashes.
NOTE: The network status light is supposed to ash when there is network activity.
Cause Solution
Network driver is not properly loaded. Reinstall network drivers.
System cannot autosense the network. Disable auto-sensing capabilities and force the system into the
correct operating mode.
Diagnostics reports a failure.
Cause Solution
The cable is not securely connected. Ensure that the cable is securely attached to the network
connector and that the other end of the cable is securely attached to the correct device.
The cable is attached to the incorrect connector. Ensure that the cable is attached to the correct connector.
There is a problem with the cable or a device at the other end of the cable.
The network controller is defective. Contact an authorized service provider.
Diagnostics passes, but the computer does not communicate with the network.
Cause Solution
Network drivers are not loaded, or driver parameters do not match current conguration.
The network controller is not congured for this computer. Select the Network and Sharing Center icon in the Control Panel
Network controller stopped working when an expansion board was added to the computer.
Ensure that the cable and device at the other end are operating correctly.
Make sure the network drivers are loaded and that the driver parameters match the conguration of the network controller.
Make sure the correct network client and protocol is installed.
and congure the network controller.
To access Control Panel in Windows 7, click Start, and then select Control Panel.
To access Control Panel in Windows 10, type control panel in the taskbar search box, and then select Control Panel from the list of applications.
Cause Solution
The network controller requires drivers. Verify that the drivers were not accidentally deleted when the
drivers for a new expansion board were installed.
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Network controller stops working without apparent cause.
Cause Solution
The les containing the network drivers are corrupted. Reinstall the network drivers using the Recovery Disc Set in
Windows 7.
If necessary, download the softpaq from the web (from a dierent computer).
The cable is not securely connected. Ensure that the cable is securely attached to the network
connector and that the other end of the cable is securely attached to the correct device.
The network controller is defective. Contact an authorized service provider.
Cannot connect to network server when attempting Remote System Installation.
Cause Solution
The network controller is not congured properly. Verify Network Connectivity, that a DHCP Server is present, and
that the Remote System Installation Server contains the NIC drivers for your NIC.
System setup utility reports unprogrammed EEPROM.
Cause Solution
Unprogrammed EEPROM. Contact an authorized service provider.

Solving memory problems

If you encounter memory problems, some common causes and solutions are listed in the following table.
CAUTION: Power may still be supplied to the DIMMs when the computer is turned o (depending on the
Management Engine (ME) settings). To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a memory module.
For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise, the computer will not boot the operating system.
NOTE: The memory count will be aected by congurations with the Management Engine (ME) enabled. The
ME uses 8MB of system memory in single channel mode or 16MB of memory in dual-channel mode to download, decompress, and execute the ME rmware for Out-of-Band (OOB), third-party data storage, and other management functions.
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System will not boot or does not function properly after installing additional memory modules.
Cause Solution
A memory module is not installed in the DIMM1 or XMM1 socket. Ensure that a memory module is installed in the DIMM1 or XMM1
socket on the system board. This socket must be populated with a memory module.
Memory module is not the correct type or speed grade for the system or the new memory module is not seated properly.
Out of memory error.
Cause Solution
You have run out of memory to run the application. Check the application documentation to determine the memory
Memory count during POST is wrong.
Cause Solution
The memory modules may not be installed correctly. Check that the memory modules have been installed correctly and
Integrated graphics may use system memory. No action required.
Insucient memory error during operation.
Replace module with the correct industry-standard device for the computer. On some models, ECC and non-ECC memory modules cannot be mixed.
requirements.
that proper modules are used.
Cause Solution
Too many Terminate and Stay Resident programs (TSRs) are installed.
You have run out of memory for the application. Check the memory requirements for the application or add more
Power LED ashes Red ve times, once every second, followed by a two second pause, and the computer beeps ve times. (Beeps stop after fth iteration but LEDs continue ashing.)
Cause Solution
Memory is installed incorrectly or is bad. 1. Reseat DIMMs. Power on the system.
Solving USB
If you encounter USB ash drive problems, common causes and solutions are listed in the following table.
Delete any TSRs that you do not need.
memory to the computer.
2. Replace DIMMs one at a time to isolate the faulty module.
3. Replace third-party memory with HP memory.
4. Replace the system board.
ash drive problems
Solving USB ash drive problems 77
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USB ash drive is not seen as a drive letter in Windows.
Cause Solution
The drive letter after the last physical drive is not available. Change the default drive letter for the ash drive in Windows.
USB ash drive not found (identied).
Cause Solution
The device is attached to a USB port that has been hidden in Computer Setup.
The device was not properly seated before power-up. Ensure the device is fully inserted into the USB port before
System will not boot from USB ash drive.
Cause Solution
Boot order is not correct. Run the Computer Setup utility and change boot sequence in
Removable Media Boot is disabled in the Computer Setup utility. Run the Computer Setup utility and enable booting to removable
The computer boots to DOS after making a bootable ash drive.
Cause Solution
Flash drive is bootable. Install the ash drive only after the operating system boots.
Flash drive is defective. Try a dierent ash drive.
Run the Computer Setup utility and enable USB ports in Advanced > Port Options.
applying power to the system
Advanced > Boot Options.
media in Advanced > Boot Options. Ensure USB is enabled in
Storage > Boot Order.

Solving Internet access problems

If you encounter Internet access problems, consult your Internet Service Provider (ISP) or refer to the common causes and solutions listed in the following table.
Unable to connect to the Internet.
Cause Solution
Internet Service Provider (ISP) account is not set up properly. Verify Internet settings or contact your ISP for assistance.
Web browser is not set up properly. Verify that the Web browser is installed and set up to work with
Cable/DSL modem is not plugged in. Plug in cable/DSL modem. You should see a “power” LED light on
Cable/DSL service is not available or has been interrupted due to bad weather.
78 Chapter 7 Troubleshooting without diagnostics
your ISP.
the front of the cable/DSL modem.
Try connecting to the Internet at a later time or contact your ISP. (If the cable/DSL service is connected, the “cable” LED light on the front of the cable/DSL modem will be on.)
Page 87
Unable to connect to the Internet.
Cause Solution
The CAT5 UTP cable is disconnected. Connect the CAT5 UTP cable between the cable modem and the
computers’s RJ-45 connector. (If the connection is good, the “PC” LED light on the front of the cable/DSL modem will be on.)
IP address is not congured properly. Contact your ISP for the correct IP address.
Cookies are corrupted. (A “cookie” is a small piece of information that a Web server can store temporarily with the Web browser. This is useful for having the browser remember some specic information that the Web server can later retrieve.)
Cannot automatically launch Internet programs.
Cause Solution
You must log on to your ISP before some programs will start. Log on to your ISP and launch the desired program.
Windows 7:
1. Select Start > Control Panel.
2. Click Internet Options.
3. In the Browsing history section on the General tab, click the
Delete button.
4. Select the Cookies check box and click the Delete button.
Windows 10:
1. Type control panel in the taskbar search box, and then
select Control Panel from the list of applications.
2. Click Internet Options.
3. In the Browsing history section, click the Delete button.
4. Select the Cookies and website data check box and click the
Delete button.

Solving software problems

Most software problems occur as a result of the following:
The application was not installed or congured correctly.
There is insucient memory available to run the application.
There is a conict between applications.
Be sure that all the needed device drivers have been installed.
If you have installed an operating system other than the factory-installed operating system, check to be sure it is supported on the system.
If you encounter software problems, see the applicable solutions listed in the following table.
Computer will not continue and the HP logo does not display.
Cause Solution
ROM issue - POST error has occurred. Observe the beeps and LED lights on the front of the computer.
See POST error messages and diagnostic front panel LEDs and
audible codes on page 86 to determine possible causes.
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Page 88
Computer will not continue and the HP logo does not display.
Cause Solution
See the Worldwide Limited Warranty for terms and conditions.
“Illegal Operation has Occurred” error message is displayed.
Cause Solution
Software being used is not Microsoft-certied for your version of Windows.
Conguration les are corrupt. If possible, save all data, close all programs, and restart the
Verify that the software is certied by Microsoft for your version of Windows (see program packaging for this information).
computer.
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8 Backing up, restoring, and recovering

This chapter provides information about the following processes. The information in the chapter is standard procedure for most products.

Creating recovery media and backups

Restoring and recovering your system
For additional information, refer to the HP Support Assistant app.
Type support in the taskbar search box, and then select the HP Support Assistant app.
or –
Select the question mark icon in the taskbar.
IMPORTANT: If you will be performing recovery procedures on a tablet, the tablet battery must be at least
70% charged before you start the recovery process.
IMPORTANT: For a tablet with a detachable keyboard, connect the tablet to the keyboard base before
beginning any recovery process.
Creating recovery media and backups
The following methods of creating recovery media and backups are available on select products only. Choose the available method according to your computer model.
Use HP Recovery Manager to create HP Recovery media after you successfully set up the computer. This step creates a backup of the HP Recovery partition on the computer. The backup can be used to reinstall the original operating system in cases where the hard drive is corrupted or has been replaced. For information on creating recovery media, see Using HP Recovery media (select products only)
on page 81. For information on the recovery options that are available using the recovery media, see Using Windows tools on page 82.
Use Windows tools to create system restore points and create backups of personal information. See
Using Windows tools on page 82.
NOTE: If storage is 32 GB or less, Microsoft System Restore is disabled by default.
On select products, use the HP Cloud Recovery Download Tool to create a bootable USB ash drive for your HP recovery media. For more information, see Using the HP Cloud Recovery Download Tool (select
products only) on page 83.

Using HP Recovery media (select products only)

If possible, check for the presence of the Recovery partition and the Windows partition. Right-click the Start button, select File Explorer, and then select This PC.
If your computer does not list the Windows partition and the Recovery partition, you can obtain recovery media for your system from support. You can nd contact information on the HP website. Go to
http://www.hp.com/support, select your country or region, and follow the on-screen instructions.
If your computer does list the Recovery partition and the Windows partition, you can use HP Recovery Manager to create recovery media after you successfully set up the computer. HP Recovery media can be
Creating recovery media and backups 81
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used to perform system recovery if the hard drive becomes corrupted. System recovery reinstalls the original operating system and software programs that were installed at the factory and then congures the settings for the programs. HP Recovery media can also be used to customize the system or restore the factory image if you replace the hard drive.
Only one set of recovery media can be created. Handle these recovery tools carefully, and keep them in a safe place.
HP Recovery Manager examines the computer and determines the required storage capacity for the media that will be required.
To create recovery discs, your computer must have an optical drive with DVD writer capability, and you must use only high-quality blank DVD-R, DVD+R, DVD-R DL, or DVD+R DL discs. Do not use rewritable discs such as CD±RW, DVD±RW, double-layer DVD±RW, or BD-RE (rewritable Blu-ray) discs; they are not compatible with HP Recovery Manager software. Or, instead, you can use a high­quality blank USB
If your computer does not include an integrated optical drive with DVD writer capability, but you would like to create DVD recovery media, you can use an external optical drive (purchased separately) to create recovery discs. If you use an external optical drive, it must be connected directly to a USB port on the computer; the drive cannot be connected to a USB port on an external device, such as a USB hub. If you cannot create DVD media yourself, you can obtain recovery discs for your computer from HP. You can nd contact information on the HP website. Go to
http://www.hp.com/support, select your country or region, and follow the on-screen instructions.
Be sure that the computer is connected to AC power before you begin creating the recovery media.
ash drive.
The creation process can take an hour or more. Do not interrupt the creation process.
If necessary, you can exit the program before you have nished creating all of the recovery DVDs. HP Recovery Manager will nish burning the current DVD. The next time you start HP Recovery Manager, you will be prompted to continue.
To create HP Recovery media using HP recovery manager:
IMPORTANT: For a tablet with a detachable keyboard, connect the tablet to the keyboard base before
beginning these steps.
1. Type recovery in the taskbar search box, and then select HP Recovery Manager.
2. Select Create recovery media, and then follow the on-screen instructions.
If you ever need to recover the system, see Recovering using HP Recovery Manager on page 83.

Using Windows tools

You can create recovery media, system restore points, and backups of personal information using Windows tools.
NOTE: If storage is 32 GB or less, Microsoft System Restore is disabled by default.
For more information and steps, see the Get Help app.
Select the Start button, and then select the Get Help app.
NOTE: You must be connected to the Internet to access the Get Help app.
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Using the HP Cloud Recovery Download Tool (select products only)

To create HP Recovery media using the HP Cloud Recovery Download Tool:
1. Go to http://www.hp.com/support.
2. Select Software and Drivers, and then follow the on-screen instructions.

Restore and recovery

There are several options for recovering your system. Choose the method that best matches your situation and level of expertise:
IMPORTANT: Not all methods are available on all products.
Windows oers several options for restoring from backup, refreshing the computer, and resetting the computer to its original state. For more information see the Get Help app.
Select the Start button, and then select the Get Help app.
NOTE: You must be connected to the Internet to access the Get Help app.
If you need to correct a problem with a preinstalled application or driver, use the Reinstall drivers and/or applications option (select products only) of HP Recovery Manager to reinstall the individual application or driver.
Type recovery in the taskbar search box, select HP Recovery Manager, select Reinstall drivers
and/or applications
, and then follow the on-screen instructions.
If you want to recover the Windows partition to original factory content, you can choose the System Recovery option from the HP Recovery partition (select products only) or use the HP Recovery media. For more information, see Recovering using HP Recovery Manager on page 83. If you have not already created recovery media, see Using HP Recovery media (select products only) on page 81.
On select products, if you want to recover the computer's original factory partition and content, or if you have replaced the hard drive, you can use the Factory Reset option of HP Recovery media. For more information, see Recovering using HP Recovery Manager on page 83.
On select products, if you want to remove the Recovery partition to reclaim hard drive space, HP Recovery Manager oers the Remove Recovery Partition option.
For more information, see Removing the HP Recovery partition (select products only) on page 85.

Recovering using HP Recovery Manager

HP Recovery Manager software allows you to recover the computer to its original factory state by using the HP Recovery media that you either created or that you obtained from HP, or by using the HP Recovery partition (select products only). If you have not already created recovery media, see Using HP Recovery media
(select products only) on page 81.
What you need to know before you get started
HP Recovery Manager recovers only software that was installed at the factory. For software not provided with this computer, you must either download the software from the manufacturer's website or reinstall the software from the media provided by the manufacturer.
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IMPORTANT: Recovery through HP Recovery Manager should be used as a nal attempt to correct
computer issues.
HP Recovery media must be used if the computer hard drive fails. If you have not already created recovery media, see Using HP Recovery media (select products only) on page 81.
To use the Factory Reset option (select products only), you must use HP Recovery media. If you have not already created recovery media, see Using HP Recovery media (select products only) on page 81.
If your computer does not allow the creation of HP Recovery media or if the HP Recovery media does not work, you can obtain recovery media for your system from support. You can nd contact information from the HP website. Go to on-screen instructions.
IMPORTANT: HP Recovery Manager does not automatically provide backups of your personal data. Before
beginning recovery, back up any personal data you want to retain.
Using HP Recovery media, you can choose from one of the following recovery options:
NOTE: Only the options available for your computer display when you start the recovery process.
System Recovery—Reinstalls the original operating system, and then congures the settings for the programs that were installed at the factory.
Factory Reset—Restores the computer to its original factory state by deleting all information from the hard drive and re-creating the partitions. Then it reinstalls the operating system and the software that was installed at the factory.
http://www.hp.com/support, select your country or region, and follow the
The HP Recovery partition (select products only) allows System Recovery only.
Using the HP Recovery partition (select products only)
The HP Recovery partition allows you to perform a system recovery without the need for recovery discs or a recovery USB ash drive. This type of recovery can be used only if the hard drive is still working.
To start HP Recovery Manager from the HP Recovery partition:
IMPORTANT: For a tablet with a detachable keyboard, connect the tablet to the keyboard base before
beginning these steps (select products only).
1. Type recovery in the taskbar search box, select HP Recovery Manager, and then select Windows
Recovery Environment
or –
For computers or tablets with keyboards attached, press f11 while the computer boots, or press and hold f11 as you press the power button.
For tablets without keyboards:
Turn on or restart the tablet, and then quickly hold down the volume up button; then select f11.
or –
Turn on or restart the tablet, and then quickly hold down the volume down button; then select f11.
2. Select Troubleshoot from the boot options menu.
.
3. Select Recovery Manager, and then follow the on-screen instructions.
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Using HP Recovery media to recover
You can use HP Recovery media to recover the original system. This method can be used if your system does not have an HP Recovery partition or if the hard drive is not working properly.
1. If possible, back up all personal les.
2. Insert the HP Recovery media, and then restart the computer.
NOTE: If the computer does not automatically restart in HP Recovery Manager, change the computer
boot order. See Changing the computer boot order on page 85.
3. Follow the on-screen instructions.
Changing the computer boot order
If your computer does not restart in HP Recovery Manager, you can change the computer boot order, which is the order of devices listed in BIOS where the computer looks for startup information. You can change the selection to an optical drive or a USB ash drive.
To change the boot order:
IMPORTANT: For a tablet with a detachable keyboard, connect the tablet to the keyboard base before
beginning these steps.
1. Insert the HP Recovery media.
2. Access the system Startup menu.
For computers or tablets with keyboards attached:
Turn on or restart the computer or tablet, quickly press esc, and then press f9 for boot options.
For tablets without keyboards:
Turn on or restart the tablet, and then quickly hold down the volume up button; then select f9.
or –
Turn on or restart the tablet, and then quickly hold down the volume down button; then select f9.
3. Select the optical drive or USB ash drive from which you want to boot.
4. Follow the on-screen instructions.
Removing the HP Recovery partition (select products only)
HP Recovery Manager software allows you to remove the HP Recovery partition to free up hard drive space.
IMPORTANT: After you remove the HP Recovery partition, you will not be able to perform System Recovery
or create HP Recovery media from the HP Recovery partition. So before you remove the Recovery partition, create HP Recovery media; see Using HP Recovery media (select products only) on page 81.
NOTE: The Remove Recovery Partition option is only available on products that support this function.
Follow these steps to remove the HP Recovery partition:
1. Type recovery in the taskbar search box, and then select HP Recovery Manager.
2. Select Remove Recovery Partition, and then follow the on-screen instructions.
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Page 94
9 POST error messages and diagnostic front
panel LEDs and audible codes
This appendix lists the error codes, error messages, and the various indicator light and audible sequences that you may encounter during Power-On Self-Test (POST) or computer restart, the probable source of the problem, and steps you can take to resolve the error condition.
POST Message Disabled suppresses most system messages during POST, such as memory count and non­error text messages. If a POST error occurs, the screen will display the error message. To manually switch to the POST Messages Enabled mode during POST, press any key (except F10, F11, or F12). The default mode is POST Message Disabled.
The speed at which the computer loads the operating system and the extent to which it is tested are determined by the POST mode selection.
Quick Boot is a fast startup process that does not run all of the system level tests, such as the memory test. Full Boot runs all of the ROM-based system tests and takes longer to complete.
Full Boot may also be enabled to run every 1 to 30 days on a regularly scheduled basis. To establish the schedule, recongure the computer to the Full Boot Every x Days mode, using Computer Setup.
NOTE: For more information on Computer Setup, see Computer Setup (F10) Utility on page 45.

POST numeric codes and text messages

This section covers those POST errors that have numeric codes associated with them. The section also includes some text messages that may be encountered during POST.
NOTE: The computer will beep once after a POST text message is displayed on the screen.
Control panel message Description Recommended action
002-Option ROM Checksum Error System ROM or expansion board option ROM
checksum.
003-System Board Failure DMA or timers. 1. Clear CMOS. (See Password security and
1. Verify the correct ROM.
2. Flash the ROM if needed.
3. If an expansion board was recently added,
remove it to see if the problem remains.
4. Clear CMOS. (See Password security and
resetting CMOS on page 93.)
5. If the message disappears, there may be a
problem with the expansion card.
6. Replace the system board.
resetting CMOS on page 93.)
2. Remove expansion boards.
3. Replace the system board.
005-Real-Time Clock Power Loss Invalid time or date in conguration memory. Reset the date and time under Control Panel
(Computer Setup can also be used). If the
86 Chapter 9 POST error messages and diagnostic front panel LEDs and audible codes
Page 95
Control panel message Description Recommended action
RTC (real-time clock) battery may need to be replaced.
008–Microcode Patch Error Processor is not supported by the BIOS. 1. Upgrade BIOS to proper version.
009–PMM Allocation Error during MEBx Download
00A-Product Information Not Valid The product information programmed into the
00B-MEBx Module did not checksum correctly Memory error during POST execution of the
Memory error during POST execution of the Management Engine (ME) BIOS Extensions option ROM.
system board is missing or invalid.
Management Engine (ME) BIOS Extensions option ROM.
problem persists, replace the RTC battery. See the Removal and Replacement section for instructions on installing a new battery.
2. Change the processor.
1. Reboot the computer.
2. Unplug the power cord, re-seat the
memory modules, and reboot the computer.
3. If the memory conguration was recently
changed, unplug the computer, restore the original memory conguration, and reboot the computer.
4. If the error persists, replace the system
board.
Use Computer Setup to update this information.
1. Reboot the computer.
2. Unplug the power cord, re-seat the
memory modules, and reboot the computer.
3. If the memory conguration was recently
changed, unplug the power cord, restore the original memory conguration, and reboot the computer.
4. If the error persists, replace the system
board.
00C-PMM Deallocation Error during MEBx Cleanup
00D-Setup Error during MEBx Execution MEBx selection or exit resulted in a setup
Memory error during POST execution of the Management Engine (ME) BIOS Extensions option ROM.
failure.
1. Reboot the computer.
2. Unplug the power cord, re-seat the
memory modules, and reboot the computer.
3. If the memory conguration was recently
changed, unplug the power cord, restore the original memory conguration, and reboot the computer.
4. If the error persists, replace the system
board.
1. Reboot the computer.
2. Unplug the power cord, re-seat the
memory modules, and reboot the computer.
3. If the memory conguration was recently
changed, unplug the power cord, restore the original memory conguration, and reboot the computer.
4. If the error persists, replace the system
board.
POST numeric codes and text messages 87
Page 96
Control panel message Description Recommended action
00E-Inventory Error during MEBx Execution BIOS information passed to the MEBx resulted
in a failure.
00F-Interface Error during MEBx Execution MEBx operation experienced a hardware error
during communication with the ME.
2E1-MemorySize Error Memory amount has changed since the last
boot (memory added or removed).
2E2-Memory Error Memory module conguration failed during
boot up.
1. Reboot the computer.
2. If the error persists, update to the latest
BIOS version.
3. If the error still persists, replace the
system board.
1. Reboot the computer.
2. If the error persists, update to the latest
BIOS version.
3. If the error still persists, replace the
system board.
The system memory size is dierent from the last startup. The most common reason is the removal of memory from the system board. Press the F1 key to save the memory changes. If this message persists, verify that the memory modules are installed correctly.
1. Ensure memory modules are correctly
installed.
2. Verify proper memory module type.
3. Remove and replace the identied faulty
memory module(s).
4. If the error persists after replacing
memory modules, replace the system board.
2E3-Incompatible Memory Module in Memory Socket(s) X, X, ...
2E4-DIMM Conguration Warning The current memory conguration is not
2E5-ECC Memory Module Detected on Unsupported Platform
2E6–Memory Not Congured Correctly for Proper MEBx Execution
300–Conguration Change Warning The storage device conguration will be
301-Hard Disk 1: SMART Hard Drive Detects Imminent Failure
A memory module in memory socket identied in the error message is missing critical SPD information, or is incompatible with the chipset.
optimized.
Recently added memory module(s) support ECC memory error correction.
DIMM1 is not installed. Make sure there is a memory module in the
updated as shown.
Hard drive is about to fail. (Some hard drives have a hard drive rmware patch that will x an erroneous error message.)
1. Verify proper memory module type.
2. Try another memory socket.
3. Replace with a supported module.
Rearrange the DIMMs so that each channel has the same amount of memory.
1. If additional memory was recently added,
remove it to see if the problem remains.
2. Check product documentation for
memory support information.
DIMM1 socket and that it is properly seated.
Not applicable
1. Determine if hard drive is giving correct
error message. Run the Drive Protection System test under using F2 Diagnostics when booting the computer.
2. Apply hard drive rmware patch
if applicable. (Available at
http://www.hp.com/support.)
3. Back up contents and replace hard drive.
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Control panel message Description Recommended action
302-Hard Disk 2: SMART Hard Drive Detects Imminent Failure
309 – 30C: Hard Disk 3–6: SMART Hard Drive Detects Imminent Failure
3F0–Boot Device Not Found Boot device not found. Insert boot device or load operating system.
3F1–Hard Disk 1 Error Hard disk 1 error. 1. Check and/or replace cables.
3F2–Hard Disk 2 Error Hard disk 2 error. 1. Check and/or replace cables.
Hard drive is about to fail. (Some hard drives have a hard drive rmware patch that will x an erroneous error message.)
Hard drive is about to fail. (Some hard drives have a hard drive rmware patch that will x an erroneous error message.)
1. Determine if hard drive is giving correct
error message. Run the Drive Protection System test under using F2 Diagnostics when booting the computer.
2. Apply hard drive rmware patch
if applicable. (Available at
http://www.hp.com/support.)
3. Back up contents and replace hard drive.
1. Determine if hard drive is giving correct
error message. Run the Drive Protection System test under using F2 Diagnostics when booting the computer.
2. Apply hard drive rmware patch
if applicable. (Available at
http://www.hp.com/support.)
3. Back up contents and replace hard drive.
2. Clear CMOS. (See Password security and
resetting CMOS on page 93.)
3. Replace the hard disk drive.
2. Clear CMOS. (See Password security and
resetting CMOS on page 93.)
3. Replace the hard disk drive.
400-Serial Port A Address Conict Detected Both external and internal serial ports are
assigned to the same resources.
41B-Device in PCI Express Slot Failed To Initialize
43A-USB Type-C I2C Not Connected Cable is required between I2C on card and USB-
43B-More Than One USB type-C Cards Are Installed
500–BIOS Recovery A system BIOS recovery has occurred. Not applicable.
70x-Wireless Mode Not Supported The system has detected a wireless module
800-Keyboard Error Keyboard failure. 1. Reconnect keyboard with computer
There is an incompatibility or problem with a PCIe device and the system or PCIe link could not be congured to a valid bus width or speed.
C on the system board.
More than one USB type-C card is installed. Remove USB type-C card so only one is
installed in the system that is not supported and has been disabled.
1. Remove any serial port expansion cards.
2. Clear CMOS. (See Password security and
resetting CMOS on page 93.)
3. Recongure card resources and/or run
Computer Setup or Windows utilities.
Try rebooting the system. If the error reoccurs, the device may not work with this system
Install cable between I2C on card and USB-C on the system board.
installed.
Replace with a supported module.
turned o.
2. Check connector for bent or missing pins.
POST numeric codes and text messages 89
Page 98
Control panel message Description Recommended action
3. Ensure that none of the keys are
depressed.
4. Replace keyboard.
801-Keyboard or System Unit Error Keyboard failure. 1. Reconnect the keyboard with computer
turned o.
2. Ensure that none of the keys are
depressed.
3. Replace the keyboard.
4. Replace the system board.
900-CPU Fan Not Detected CPU fan is not connected or may have
malfunctioned.
901-Chassis, Rear Chassis, or Front Chassis Fan not Detected
903-Computer Cover Has Been Removed Since Last System Startup
904-SATA Cabling Error One or more SATA devices are improperly
90B-Fan Failure The system has detected that a cooling fan is
90D-System Temperature Thermal shutdown occurred. The system BIOS
Chassis, rear chassis, or front chassis fan is not connected or may have malfunctioned.
attached. For optimal performance, the SATA 0 and SATA 1 ports should be used for hard drives before other ports.
not operating correctly.
has detected your machine was previously shut down to avoid overheating. Overheating may occur if the cooling vents are blocked or the operating temperature exceeds the system specications. The machine should return to normal operation once the situation is resolved.
1. Reseat CPU fan.
2. Reseat fan cable.
3. Replace CPU fan.
1. Reseat chassis, rear chassis, or front
chassis fan.
2. Reseat fan cable.
3. Replace chassis, rear chassis, or front
chassis fan.
N/A
Ensure SATA connectors are used in ascending order. For one device, use SATA 0. For two devices, use SATA 0 and SATA 1. For three devices, use SATA 0, SATA 1, and SATA 2.
1. Reseat fan.
2. Reseat fan cable.
3. Replace fan.
Make sure system has proper airow.
90E-Power Supply Fan Not detected Power supply fan is not connected or may have
malfunctioned.
1. Reseat power supply fan.
2. Reseat fan cable.
3. Replace power supply fan.
90 Chapter 9 POST error messages and diagnostic front panel LEDs and audible codes
Page 99

Interpreting system validation diagnostic front panel LEDs and audible codes

During the system validation phase that occurs at system startup, the BIOS validates the functionality of the following subsystems and conditions:
AC adapter
System board power
Processor failure
BIOS corruption
Memory failure
Graphics failure
System board failure
BIOS authentication failure
If an error is detected, specic patterns of long and short blinks, accompanied by long and short beeps (where applicable) are used to identify the error. These patterns will make up a two part code:
Major – the category of the error
Minor – the specic error within the category
NOTE: Single beep/blink codes are not used.
Number of long beeps/blinks Error category
1 Not used
2 BIOS
3 Hardware
4 Thermal
5 System board
Patterns of blink/beep codes are determined by using the following parameters:
1 second pause occurs after the last major blink.
2 second pause occurs after the last minor blink.
Beep error code sequences occur for the rst 5 iterations of the pattern and then stop.
Blink error code sequences continue until the computer is unplugged or the power button is pressed.
NOTE: Not all diagnostic lights and audible codes are available on all models.
The red LED blinks to represent the major error category (long blinks). The white LED blinks to represent the minor error category (short blinks). For example, ‘3.5’ indicates 3 long red blinks and 5 short white blinks to communicate the processor is not detected.
Interpreting system validation diagnostic front panel LEDs and audible codes 91
Page 100
Category Major/minor code Description
BIOS 2.2 The main area (DXE) of BIOS has become corrupted and there is no recovery
binary image available.
2.3 The embedded controller policy requires the user to enter a key sequence.
2.4 The embedded controller is checking or recovering the boot block.
Hardware 3.2 The embedded controller has timed out waiting for BIOS to return from
memory initialization.
3.3 The embedded controller has timed out waiting for BIOS to return from graphics initialization.
3.4 The system board displays a power failure (crowbar).*
3.5 The processor is not detected.*
3.6 The processor does not support an enabled feature.
Thermal 4.2 A processor over temperature condition has been detected.*
4.3 An ambient temperature over temperature condition has been detected.
4.4 An MXM over temperature condition has been detected.
System board 5.2 The embedded controller cannot nd valid rmware.
5.3 The embedded controller has timed out waiting for the BIOS.
5.4 The embedded controller has timed out waiting for BIOS to return from system board initialization.
5.5 The embedded controller rebooted the system after a possible lockup condition had been detected through the use of a System Health Timer, Automated System Recovery Timer, or other mechanism.
* Indicates hardware triggered event; all other events are controlled by the BIOS.
92 Chapter 9 POST error messages and diagnostic front panel LEDs and audible codes
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