HP EliteDesk 700 MT G1 Maintenance and Service Guide

Maintenance and Service Guide

HP EliteDesk 700 MT G1

© Copyright 2014 Hewlett-Packard
Development Company, L.P. The information
contained herein is subject to change without
notice.

Intel and Pentium are trademarks of Intel
Corporation in the U.S. and other countries.
Bluetooth is a trademark owned by its
proprietor and used by Hewlett-Packard
Company under license. Microsoft, Windows,
WIndows 7, and Windows 8.1 are U.S.
registered trademarks of the Microsoft group
of companies. SD Logo is a trademark of its
proprietor.

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.

This document contains proprietary
information that is protected by copyright. No
part of this document may be photocopied,
reproduced, or translated to another language
without the prior written consent of Hewlett­Packard Company.

Product notice

This guide describes features that are common
to most models. Some features may not be
available on your computer.

Not all features are available on all editions of
Windows 8.1. This computer may require
upgraded and/or separately purchased
hardware, drivers, and/or software to take full
advantage of Windows 8.1 functionality. See

http://www.microsoft.com for details.

This computer may require upgraded and/ or
separately purchased hardware and/or a DVD
drive to install the Windows 7 software and
take full advantage of Windows 7 functionality.
See http://windows.microsoft.com/en-us/

windows7/get-know-windows-7 for details.

First Edition (November 2014)

Document Part Number: 789429-001

Safety warning notice

WARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not place

the device directly on your lap or obstruct the device air vents. Use the device only on a hard, flat surface. Do
not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or
rugs or clothing, to block airflow. Also, do not allow the AC adapter to contact the skin or a soft surface, such
as pillows or rugs or clothing, during operation. The device and the AC adapter comply with the user­accessible surface temperature limits defined by the International Standard for Safety of Information
Technology Equipment (IEC 60950).

iii

iv Safety warning notice

Table of contents

1 Product features ........................................................................................................................................... 1

Standard configuration features ........................................................................................................................... 1

Front panel components ....................................................................................................................................... 2

Rear panel components ......................................................................................................................................... 3

Serial number location .......................................................................................................................................... 4

2 Illustrated parts catalog ................................................................................................................................ 5

Microtower (MT) chassis spare parts .................................................................................................................... 5

Computer major components ............................................................................................................. 5

Cables .................................................................................................................................................. 7

Misc parts ............................................................................................................................................. 8

Drives ................................................................................................................................................. 10

Misc boards ........................................................................................................................................ 11

3 Routine care, SATA drive guidelines, and disassembly preparation .................................................................. 12

Electrostatic discharge information ................................................................................................................... 12

Generating static ............................................................................................................................... 12

Preventing electrostatic damage to equipment .............................................................................. 13

Personal grounding methods and equipment .................................................................................. 13

Grounding the work area .................................................................................................................. 13

Recommended materials and equipment ........................................................................................ 14

Operating guidelines ........................................................................................................................................... 14

Routine care ......................................................................................................................................................... 15

General cleaning safety precautions ................................................................................................ 15

Cleaning the Computer Case ............................................................................................................. 15

Cleaning the keyboard ...................................................................................................................... 15

Cleaning the monitor ......................................................................................................................... 16

Cleaning the mouse ........................................................................................................................... 16

Service considerations ........................................................................................................................................ 16

Power supply fan ............................................................................................................................... 16

Tools and software Requirements ................................................................................................... 16

Screws ............................................................................................................................................... 17

Cables and connectors ...................................................................................................................... 17

Hard Drives ........................................................................................................................................ 17

Lithium coin cell battery ................................................................................................................... 17

SATA hard drives .................................................................................................................................................. 18

v

SATA hard drive cables ........................................................................................................................................ 18

SATA data cable ................................................................................................................................. 18

SMART ATA drives ................................................................................................................................................ 18

Cable management .............................................................................................................................................. 19

4 Removal and replacement procedures – Microtower (MT) chassis .................................................................... 20

Preparation for disassembly ............................................................................................................................... 20

Access panel ........................................................................................................................................................ 21

Front bezel ........................................................................................................................................................... 22

Optical drive bezel blank ..................................................................................................................................... 23

Memory ................................................................................................................................................................ 24

DIMMs ................................................................................................................................................ 24

DDR3-SDRAM DIMMs ......................................................................................................................... 24

Populating DIMM sockets .................................................................................................................. 24

Installing DIMMs ................................................................................................................................ 25

Expansion cards ................................................................................................................................................... 27

Drives ................................................................................................................................................................... 30

Drive positions ................................................................................................................................... 32

Removing a slim optical drive ........................................................................................................... 32

Installing a slim optical drive ............................................................................................................ 33

Removing a hard drive ...................................................................................................................... 34

Installing a hard drive ....................................................................................................................... 35

Battery ................................................................................................................................................................. 39

Drive power cable ................................................................................................................................................ 41

Front I/O and power switch assembly ................................................................................................................. 42

Heat sink .............................................................................................................................................................. 45

Processor ............................................................................................................................................................. 46

Speaker ................................................................................................................................................................ 47

Rear chassis fan ................................................................................................................................................... 48

Power supply ....................................................................................................................................................... 49

System board ....................................................................................................................................................... 51

System board callouts ...................................................................................................................... 53

5 Computer Setup (F10) Utility ........................................................................................................................ 55

Computer Setup (F10) Utilities ............................................................................................................................ 55

Using Computer Setup (F10) Utilities ............................................................................................... 56

Computer Setup—File ...................................................................................................................... 57

Computer Setup—Storage ............................................................................................................... 58

Computer Setup—Security ............................................................................................................... 59

Computer Setup—Power .................................................................................................................. 62

Computer Setup—Advanced ............................................................................................................ 63

vi

Recovering the Configuration Settings ............................................................................................................... 65

6 Troubleshooting without diagnostics ............................................................................................................ 66

Safety and comfort .............................................................................................................................................. 66

Before you call for technical support .................................................................................................................. 66

Helpful hints ........................................................................................................................................................ 67

Solving general problems ................................................................................................................................... 68

Solving power problems ...................................................................................................................................... 72

Solving hard drive problems ............................................................................................................................... 73

Solving media card reader problems .................................................................................................................. 75

Solving display problems .................................................................................................................................... 76

Solving audio problems ....................................................................................................................................... 80

Solving printer problems ..................................................................................................................................... 82

Solving keyboard and mouse problems ............................................................................................................. 83

Solving Hardware Installation Problems ............................................................................................................ 85

Solving Network Problems .................................................................................................................................. 87

Solving memory problems .................................................................................................................................. 90

Solving CD-ROM and DVD problems .................................................................................................................... 92

Solving USB flash drive problems ....................................................................................................................... 94

Solving front panel component problems .......................................................................................................... 95

Solving Internet access problems ....................................................................................................................... 95

Solving software problems ................................................................................................................................. 96

7 POST error messages ................................................................................................................................... 98

POST numeric codes and text messages ............................................................................................................ 98

Interpreting POST diagnostic front panel LEDs and audible codes .................................................................. 103

8 Password security and resetting CMOS ........................................................................................................ 106

Resetting the password jumper ........................................................................................................................ 106

Changing a Setup or Power-On password ........................................................................................................ 107

Deleting a Setup or Power-On password .......................................................................................................... 108

Clearing and resetting the CMOS ....................................................................................................................... 108

9 HP PC Hardware Diagnostics ....................................................................................................................... 110

Why run HP PC Hardware Diagnostics .............................................................................................................. 110

How to access and run HP PC Hardware Diagnostics ....................................................................................... 110

Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................. 110

10 System backup and recovery .................................................................................................................... 112

Backing up, restoring, and recovering in Windows 8.1 or Windows 8 ............................................................. 112

vii

Creating recovery media and backups ........................................................................................... 112

Restoring and recovering using Windows tools ............................................................................. 112

Using Reset when the system is not responding ......................................................... 113

Recovery using the Windows recovery USB flash drive ............................................... 113

Recovery using Windows operating system media (purchased separately) .............. 114

Backing up, restoring, and recovering in Windows 7 ........................................................................................ 114

Creating recovery media ................................................................................................................. 115

Creating recovery media using HP Recovery Manager (select models only) .............. 115

Creating recovery discs with HP Recovery Disc Creator (select models only) ............ 116

Creating recovery discs .............................................................................. 116

Backing up your information ........................................................................................ 117

System Restore ............................................................................................................................... 117

System Recovery ............................................................................................................................. 118

System Recovery when Windows is responding .......................................................... 118

System Recovery when Windows is not responding ................................................... 119

System Recovery using recovery media (select models only) .................................... 119

Using HP Recovery Disc operating system discs (select models only) ....................... 120

Appendix A Power Cord Set Requirements ...................................................................................................... 122

General Requirements ....................................................................................................................................... 122

Japanese Power Cord Requirements ................................................................................................................ 122

Country-Specific Requirements ........................................................................................................................ 123

Appendix B Statement of Volatility ................................................................................................................ 124

Appendix C Specifications ............................................................................................................................. 126

MT Specifications ............................................................................................................................................... 126

Index ........................................................................................................................................................... 128

viii

1 Product features

Standard configuration features

Features may vary depending on the model. For support assistance and to learn more about the hardware
and software installed on your computer model, run the HP Support Assistant utility.

Standard configuration features 1

Front panel components

Drive configuration may vary by model. Some models have a bezel blank covering the optical drive bay.

1 Slim Optical Drive (optional) 5 Headphone Connector

2 Dual-State Power Button 6 SD Card Reader

3 USB 2.0 Ports (black) 7 Hard Drive Activity Light

4 USB 3.0 Ports (blue) 8 Microphone/Headphone Connector

NOTE: When a device is plugged into the Microphone/Headphone Connector, a dialog box will pop up asking if you want

to use the connector for a microphone Line-In device or a headphone. You can reconfigure the connector at any time by
double-clicking the Audio Manager icon in the Windows taskbar.

NOTE: The Power On Light is normally white when the power is on. If it is flashing red, there is a problem with the

computer and it is displaying a diagnostic code. Refer to the Maintenance and Service Guide to interpret the code.

2 Chapter 1 Product features

Rear panel components

1 PS/2 Keyboard Connector (purple) 7 Power Cord Connector

2

3

4

5

6

NOTE: An optional second serial port and an optional parallel port are available from HP.

When a device is plugged into the blue Line-In Audio Connector, a dialog box will pop up asking if you want to use the
connector for a line-in device or a microphone. You can reconfigure the connector at any time by double-clicking the Audio
Manager icon in the Windows taskbar.

When a graphics card is installed in one of the system board slots, the video connectors on the graphics card and/or the
integrated graphics on the system board may be used. The specific graphics card installed and software configuration will
determine the behavior.

The system board graphics can be disabled by changing settings in Computer Setup.

USB 2.0 Ports (black) 8 PS/2 Mouse Connector (green)

DisplayPort Monitor Connectors 9 RJ-45 Network Connector

VGA Monitor Connector 10 Serial Connector

USB 3.0 Ports (blue) 11 Line-In Audio Connector (blue)

Line-Out Connector for powered audio devices
(green)

Rear panel components 3

Serial number location

Each computer has a unique serial number and a product ID number that are located on the exterior of the
computer. Keep these numbers available for use when contacting customer service for assistance.

4 Chapter 1 Product features

2 Illustrated parts catalog

Microtower (MT) chassis spare parts

Computer major components

Microtower (MT) chassis spare parts 5

Item Description

(1) Front bezel

* Slim optical drive bezel blank

(2) Access panel

(3) Power supply

280W, 92% efficient

280W, 90% efficient

280W, 85% efficient (for use only in China)

280W, standard

(4) System board (includes replacement thermal material)

For use in models without Windows 8.1

For use in models with Windows 8.1 Standard

For use in models with Windows 8.1 Professional

For use in NetClone models

(5) Memory modules (PC3-12800, 1600-MHz)

8-GB

4-GB

2-GB

(6) Processors (include replacement thermal material)

Intel Core i5-4590, 3.3 GHz

Intel Core i5-4570, 3.2 GHz

Intel Core i3-4160, 3.6 GHz

Intel Core i3-4150, 3.5 GHz

Intel Core i3-4130, 3.4 GHz

6 Chapter 2 Illustrated parts catalog

Cables

Item Description

(1) Front I/O assembly

(2) SATA drive power cable

(3) SATA data cable, 14 inch, 1 straight end, 1 angled end

* Adapter, DisplayPort to HDMI

* Adapter, DisplayPort to HDMI 1.4

* Adapter, DisplayPort to VGA

* Adapter, DisplayPort to DVI

* DisplayPort cable

Microtower (MT) chassis spare parts 7

Misc parts

8 Chapter 2 Illustrated parts catalog

Item Description

(1) Fan sink (includes replacement thermal material)

(2) Fan

(3) Speaker

(4) Hard drive conversion bracket, 2.5-inch to 3.5-inch

(5) Adapter, USB 3.0 to USB 2.0 (for use with card reader)

(6) Solenoid lock

(7) Hood sensor

(8) Clamp lock

(9) Printer port, PCI card

(10) Serial port, PCI card

* Secure Digital (SD) card reader

* Rubber foot kit

* Keyed cable lock

* Grommet, hard drive isolation, blue

* Antenna for use with WLAN card

* Removable frame carrier (optical drive)

* Mouse

PS2, optical

USB, laser

USB, optical

Washable

Wireless

* Keyboards

PS/2

USB

Wireless

Washable

Smart card

Microtower (MT) chassis spare parts 9

Drives

Description

Hard drives/Solid-state drives

2-TB, 7200-rpm

1-TB, 7200-rpm, 3.5-inch

1-TB, hybrid SSD, 2.5-inch

500-GB, 7200-rpm

500-GB, hybrid SSD, 2.5-inch

500-GB, 5400-rpm, 2.5-inch, FIPS

500-GB, 2.5-inch, self-encrypting (SED)

500-GB, 7200-rpm, 3.5-inch

256-GB Solid-state Drive (SSD), self-encrypting (SED)

256-GB Solid-state Drive (SSD)

180 GB Solid-state Drive (SSD)

128-GB Solid-state Drive (SSD), self-encrypting drive (SED)

128-GB Solid-state Drive (SSD)

120-GB Solid-state Drive (SSD)

32-GB Solid-state Drive (SSD)

Optical drives

Blu-ray BD-Writer XL Drive

DVD±RW drive

DVD-ROM drive

Grommet, hard drive isolation, blue

10 Chapter 2 Illustrated parts catalog

Misc boards

Item Description

(1) Intel PRO/1000 NIC

WLAN modules

(2) WLAN 802.11 a/b/g/n + Bluetooth 4.0 module

* HP WLAN 802.11 a/b/g/n 2x2 module

* HP WLAN 802.11 a/g/n module (for use only in Indonesia)

Microtower (MT) chassis spare parts 11

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 finger 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 affected 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.

Generating static

The following table shows that:

●

Different activities generate different amounts of static electricity.

●

Static electricity increases as humidity decreases.

Relative Humidity

Event 55% 40% 10%

Walking across carpet

Walking across vinyl floor

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.

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

NOTE: 700 volts can degrade a product.

12 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

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.

●

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.

Personal grounding methods and equipment

Use the following equipment to prevent static electricity damage to equipment:

●

Wrist straps are flexible 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 fit 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 floors or dissipative floor mats, use them on both feet with
a maximum of one-megohm ± 10% resistance between the operator and ground.

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 off power and input signals before inserting and removing connectors or test equipment.

Static Shielding Protection Levels

1,500

7,500

15,000

●

Use fixtures made of static-safe materials when fixtures must directly contact dissipative surfaces.

●

Keep work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam.

●

Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive.

Electrostatic discharge information 13

Recommended materials and equipment

Materials and equipment that are recommended for use in preventing static electricity include:

●

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 floor mats with hard tie to ground

●

Field service kits

●

Static awareness labels

●

Wrist straps and footwear straps providing one-megohm +/- 10% resistance

●

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 monitor to permit the required airflow.

●

Never restrict the airflow 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 airflow.

●

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 airflow. Be sure to unplug the computer before cleaning the air vents.

●

Never operate the computer with the cover or side panel removed.

●

Do not stack computers on top of each other or place computers so near each other that they are
subject to each other’s re-circulated or preheated air.

●

If the computer is to be operated within a separate enclosure, intake and exhaust ventilation must be
provided on the enclosure, and the same operating guidelines listed above will still apply.

●

Keep liquids away from the computer and keyboard.

14 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

●

Never cover the ventilation slots on the monitor with any type of material.

●

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 flammable 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.

Cleaning the Computer Case

Follow all safety precautions in General cleaning safety precautions on page 15 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 airflow.

Cleaning the keyboard

Follow all safety precautions in General cleaning safety precautions on page 15 before cleaning the
keyboard.

To clean the tops of the keys or the keyboard body, follow the procedures described in

Computer Case on page 15.

When cleaning debris from under the keys, review all rules in
before following these procedures:

CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under the

keys.

Cleaning the

General cleaning safety precautions on page 15

●

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.

Routine care 15

●

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
fibers or dirt in confined areas. Allow the parts to air dry before reassembly.

Cleaning the monitor

●

Wipe the monitor screen with a clean cloth moistened with water or with a towelette designed for
cleaning monitors. 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 flammable liquids on the monitor.

●

To clean the monitor body follow the procedures in

Cleaning the mouse

Before cleaning the mouse, ensure that the power to the computer is turned off.

●

Clean the mouse ball by first 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 15.

Service considerations

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

Power supply fan

The power supply fan is a variable-speed fan based on the temperature in the power supply.

CAUTION: The cooling fan is always on when the computer is in the “On” mode. The cooling fan is off when

the computer is in “Standby,” “Suspend,” or “Off” modes.

You must disconnect the power cord from the power source before opening the computer to prevent system
board or component damage.

Cleaning the Computer Case on page 15.

Tools and software Requirements

To service the computer, you need the following:

●

Torx T-15 screwdriver

●

Torx T-15 screwdriver with small diameter shank (for certain front bezel removal)

●

Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)

●

Phillips #2 screwdriver

●

Diagnostics software

●

Tamper-resistant T-15 wrench

16 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

Screws

The screws used in the computer are not interchangeable. They may have standard or metric threads and
may be of different 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 finish. U.S. screws have a silver finish 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 flat, flexible 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.

●

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 computer.

●

Avoid dropping drives from any height onto any surface.

●

If you are inserting or removing a hard drive, turn off 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.

●

Do not use excessive force when inserting a drive.

●

Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic fields
such as monitors 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 fire and chemical burn if the battery

is handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose in water or fire,
or expose it to temperatures higher than 140ºF (60ºC). Do not attempt to recharge the battery.

Service considerations 17

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.

SATA hard drives

Serial ATA Hard Drive Characteristics

Number of pins/conductors in data cable 7/7

Number of pins in power cable 15

Maximum data cable length 39.37 in (100 cm)

Data interface voltage differential 400-700 mV

Drive voltages 3.3 V, 5 V, 12 V

Jumpers for configuring drive N/A

Data transfer rate 6.0 Gb/s

SATA hard drive cables

SATA data cable

Always use an HP approved SATA 6.0 Gb/s cable as it is fully backwards compatible with the SATA 1.5 Gb/s
drives.

Current HP desktop products ship with SATA 6.0 Gb/s hard drives.

SATA data cables are susceptible to damage if overflexed. Never crease a SATA data cable and never bend it
tighter than a 30 mm (1.18 in) radius.

The SATA data cable is a thin, 7-pin cable designed to transmit data for only a single drive.

SMART ATA drives

The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP Personal Computers
have built-in drive failure prediction that warns the user or network administrator of an impending failure or
crash of the hard drive. The SMART drive tracks fault prediction and failure indication parameters such as
reallocated sector count, spin retry count, and calibration retry count. If the drive determines that a failure is
imminent, it generates a fault alert.

18 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

Cable management

Always follow good cable management practices when working inside the computer.

●

Keep cables away from major heat sources like the heat sink.

●

Do not jam cables on top of expansion cards or memory modules. Printed circuit cards like these are not
designed to take excessive pressure on them.

●

Keep cables clear of sliding or moveable parts to prevent them from being cut or crimped when the
parts are moved.

●

When folding a flat ribbon cable, never fold to a sharp crease. Sharp creases may damage the wires.

●

Some flat ribbon cables come prefolded. Never change the folds on these cables.

●

Do not bend any cable sharply. A sharp bend can break the internal wires.

●

Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.

●

Never crease a SATA data cable.

●

Do not rely on components like the drive cage, power supply, or computer cover to push cables down
into the chassis. Always position the cables to lay properly by themselves.

Cable management 19

4 Removal and replacement procedures –

Microtower (MT) chassis

Adherence to the procedures and precautions described in this chapter is essential for proper service. After
completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all
components operate properly.

NOTE: Not all features listed in this guide are available on all computers.

Preparation for disassembly

See Routine care, SATA drive guidelines, and disassembly preparation on page 12 for initial safety
procedures.

1. Remove/disengage any security devices that prohibit opening the computer.

2. Close any open software applications.

3. Exit the operating system.

4. Remove any compact disc or media card from the computer.

5. Turn off the computer and any peripheral devices that are connected to it.

CAUTION: Turn off the computer before disconnecting any cables.

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. In some systems the cooling fan is on even when the computer is in
the “Standby,” or “Suspend” modes. The power cord should always be disconnected before servicing a
unit.

6. Disconnect the power cord from the electrical outlet and then from the computer.

7. Disconnect all peripheral device cables from the computer.

8. As applicable, lay the computer down on its side to achieve a safe working position.

NOTE: During disassembly, label each cable as you remove it, noting its position and routing. Keep all

screws with the units removed.

CAUTION: The screws used in the computer are of different thread sizes and lengths; using the wrong

screw in an application may damage the unit.

20 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

Access panel

To access internal components, you must remove the access panel:

1. Prepare the computer for disassembly (

2. Lift up on the access panel handle (1), slide the computer back approximately 12 mm (1/2 inch) (2), and

then lift the access panel off the computer (3).

Preparation for disassembly on page 20)

Access panel 21

Front bezel

1. Prepare the computer for disassembly (Preparation for disassembly on page 20)

2. Remove the access panel (

3. Lift up the three tabs on the side of the bezel (1), then rotate the bezel off the chassis (2).

Access panel on page 21)

22 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

Optical drive bezel blank

On some models, there is a bezel blank covering the slim optical drive bay. Remove the bezel blank before
installing an optical drive. To remove the bezel blank:

1. Remove the access panel (

2. Remove the front bezel (

3. To remove the bezel blank, press upward on the bottom tab and press downward on the top tab on the

right side of the blank (1), and then rotate the blank off the front of the bezel (2).

Access panel on page 21)

Front bezel on page 22)

Optical drive bezel blank 23

Memory

Description

8-GB, PC3-12800

4-GB, PC3-12800

2-GB, PC3-12800

The computer comes with double data rate 3 synchronous dynamic random access memory (DDR3-SDRAM)
dual inline memory modules (DIMMs).

DIMMs

The memory sockets on the system board can be populated with up to four industry-standard DIMMs. These
memory sockets are populated with at least one preinstalled DIMM. To achieve the maximum memory
support, you can populate the system board with up to 32-GB of memory configured in a high-performing
dual channel mode.

DDR3-SDRAM DIMMs

For proper system operation, the DDR3-SDRAM DIMMs must be:

●

industry-standard 240-pin

●

unbuffered non-ECC PC3-12800 DDR3-1600 MHz-compliant

●

1.5 volt DDR3-SDRAM DIMMs

The DDR3-SDRAM DIMMs must also:

●

support CAS latency 11 DDR3 1600 MHz (11-11-11 timing)

●

contain the mandatory JEDEC SPD information

In addition, the computer supports:

●

512-Mbit, 1-Gbit, and 2-Gbit non-ECC memory technologies

●

single-sided and double-sided DIMMs

●

DIMMs constructed with x8 and x16 DDR devices; DIMMs constructed with x4 SDRAM are not supported

NOTE: The system will not operate properly if you install unsupported DIMMs.

Populating DIMM sockets

There are four DIMM sockets on the system board, with two sockets per channel. The sockets are labeled
DIMM1, DIMM2, DIMM3, and DIMM4. Sockets DIMM1 and DIMM2 operate in memory channel B. Sockets DIMM3
and DIMM4 operate in memory channel A.

The system will automatically operate in single channel mode, dual channel mode, or flex mode, depending
on how the DIMMs are installed.

NOTE: Single channel and unbalanced dual channel memory configurations will result in inferior graphics

performance.

24 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

●

The system will operate in single channel mode if the DIMM sockets are populated in one channel only.

●

The system will operate in a higher-performing dual channel mode if the total memory capacity of the
DIMMs in Channel A is equal to the total memory capacity of the DIMMs in Channel B. The technology
and device width can vary between the channels. For example, if Channel A is populated with two 1-GB
DIMMs and Channel B is populated with one 2-GB DIMM, the system will operate in dual channel mode.

●

The system will operate in flex mode if the total memory capacity of the DIMMs in Channel A is not equal
to the total memory capacity of the DIMMs in Channel B. In flex 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. For optimal speed, the channels should be balanced so that the
largest amount of memory is spread between the two channels. If one channel will have more memory
than the other, the larger amount should be assigned to Channel A. For example, if you are populating
the sockets with one 2-GB DIMM, and three 1-GB DIMMs, Channel A should be populated with the 2-GB
DIMM and one 1-GB DIMM, and Channel B should be populated with the other two 1-GB DIMMs. With this
configuration, 4-GB will run as dual channel and 1-GB will run as single channel.

●

In any mode, the maximum operational speed is determined by the slowest DIMM in the system.

Installing DIMMs

CAUTION: You must disconnect the power cord and wait approximately 30 seconds for the power to drain

before adding or removing memory modules. Regardless of the power-on state, voltage is always supplied to
the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing
memory modules while voltage is present may cause irreparable damage to the memory modules or system
board.

The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is important
to use memory modules with gold-plated metal contacts to prevent corrosion and/or oxidation resulting
from having incompatible metals in contact with each other.

Static electricity can damage the electronic components of the computer or optional cards. Before beginning
these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal
object.

When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the
module.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20)

2. Remove the access panel (

Access panel on page 21)

Memory 25

3. Open both latches of the memory module socket (1), and insert the memory module into the socket (2).

NOTE: A memory module can be installed in only one way. Match the notch on the module with the tab

on the memory socket.

Populate the black DIMM sockets before the white DIMM sockets.

For maximum performance, populate the sockets so that the memory capacity is spread as equally as
possible between Channel A and Channel B.

4. Push the module down into the socket, ensuring that the module is fully inserted and properly seated.

Make sure the latches are in the closed position (3).

5. Repeat steps 3 and 4 to install any additional modules.

6. Replace the computer access panel.

7. Reconnect the power cord and turn on the computer.

8. Lock any security devices that were disengaged when the access panel was removed.

The computer should automatically recognize the additional memory the next time you turn on the
computer.

26 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

Expansion cards

The computer has two PCI Express x1 expansion slots, one PCI Express x16 expansion slot, and one PCI
Express x16 expansion slot that is downshifted to a x4 slot.

NOTE: You can install a PCI Express x1, x8, or x16 expansion card in the PCI Express x16 slot.

For dual graphics card configurations, the first (primary) card must be installed in the PCI Express x16 slot
that is NOT downshifted to a x4.

To remove, replace, or add an expansion card:

1. Prepare the computer for disassembly (

2. Remove the access panel (

3. Release the slot cover retention latch that secures the slot covers by lifting the tab on the latch and

rotating the latch to the open position.

Access panel on page 21)

Preparation for disassembly on page 20)

4. Locate the correct vacant expansion socket on the system board and the corresponding expansion slot

on the back of the computer chassis.

5. Before installing an expansion card, remove the expansion slot cover or the existing expansion card.

NOTE: Before removing an installed expansion card, disconnect any cables that may be attached to

the expansion card.

a. If you are installing an expansion card in a vacant socket, you must slide one of the expansion slot

covers up and out of the chassis or use a flatblade screwdriver to pry out one of the metal shields
on the rear panel that covers the expansion slot. Be sure to remove the appropriate shield for the
expansion card you are installing.

Expansion cards 27

b. If you are removing a PCI Express x1 card, hold the card at each end and carefully rock it back and

forth until the connectors pull free from the socket. Lift the card straight up (1) then away from
the inside of the chassis (2) to remove it. Be sure not to scrape the card against other components.

28 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

c. If you are removing a PCI Express x16 card, pull the retention arm on the back of the expansion

socket away from the card and carefully rock the card back and forth until the connectors pull free
from the socket. Lift the card straight up then away from the inside of the chassis to remove it. Be
sure not to scrape the card against other components.

6. Store the removed card in anti-static packaging.

7. If you are not installing a new expansion card, install an expansion slot cover to close the open slot.

CAUTION: After removing an expansion card, you must replace it with a new card or expansion slot

cover for proper cooling of internal components during operation.

8. To install a new expansion card, hold the card just above the expansion socket on the system board

then move the card toward the rear of the chassis (1) so that the bottom of the bracket on the card
slides into the small slot on the chassis. Press the card straight down into the expansion socket on the
system board (2).

NOTE: When installing an expansion card, press firmly on the card so that the whole connector seats

properly in the expansion card slot.

Expansion cards 29

9. Rotate the slot cover retention latch back in place to secure the expansion card.

10. Connect external cables to the installed card, if needed. Connect internal cables to the system board, if

needed.

11. Replace the computer access panel.

Drives

12. Reconnect the power cord and turn on the computer.

13. Lock any security devices that were disengaged when the computer access panel was removed.

14. Reconfigure the computer, if necessary.

Description

Hard drives/Solid-state drives

2-TB, 7200-rpm

1-TB, 7200-rpm, 3.5-inch

1-TB, hybrid SSD, 2.5-inch

500-GB, 7200-rpm

500-GB, hybrid SSD, 2.5-inch

500-GB, 5400-rpm, 2.5-inch, FIPS

500-GB, 2.5-inch, self-encrypting (SED)

500-GB, 7200-rpm, 3.5-inch

256-GB Solid-state Drive (SSD), self-encrypting (SED)

256-GB Solid-state Drive (SSD)

180 GB Solid-state Drive (SSD)

128-GB Solid-state Drive (SSD), self-encrypting drive (SED)

30 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

Description

128-GB Solid-state Drive (SSD)

120-GB Solid-state Drive (SSD)

32-GB Solid-state Drive (SSD)

Optical drives

Blu-ray BD-Writer XL Drive

DVD±RW drive

DVD-ROM drive

Grommet, hard drive isolation, blue

When installing drives, follow these guidelines:

●

The primary Serial ATA (SATA) hard drive must be connected to the dark blue primary SATA connector
on the system board labeled SATA0.

●

Connect secondary hard drives and optical drives to one of the light blue SATA connectors on the
system board (labeled SATA1 and SATA2).

●

HP has provided four extra 6-32 silver mounting screws installed next to the hard drive bays (1). The
mounting screws are required for hard drives installed in the upper (secondary) hard drive bay. If you
are replacing a primary hard drive in the lower bay, remove the silver and blue mounting screws from
the old drive and install them in the new drive.

Drives 31

CAUTION: To prevent loss of work and damage to the computer or drive:

If you are inserting or removing a drive, shut down the operating system properly, turn off the computer, and
unplug the power cord. Do not remove a 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.

Handle a drive carefully; do not drop it.

Do not use excessive force when inserting a drive.

Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic fields such as
monitors or speakers.

If a drive must be mailed, place the drive in a bubble-pack mailer or other protective packaging and label the
package “Fragile: Handle With Care.”

Drive positions

1 Slim optical drive bay

2 3.5-inch secondary hard drive bay

3 3.5-inch primary hard drive bay

NOTE: The drive configuration on your computer may be different than the drive configuration shown above.

To verify the type and size of the storage devices installed in the computer, run Computer Setup.

Removing a slim optical drive

1. Prepare the computer for disassembly (Preparation for disassembly on page 20)

2. Remove the access panel (

3. Remove the front bezel (

4. Disconnect the power cable and data cable from the back of the optical drive.

32 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

Access panel on page 21)

Front bezel on page 22)

CAUTION: When removing the cables, pull the tab or connector instead of the cable itself to avoid

damaging the cable.

5. Push inward on the green release latch on the underside of the drive (1) and push the rear of the drive

forward to unlock it (2), and then slide the drive out of the drive bay (3).

Installing a slim optical drive

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the access panel (

3. Remove the front bezel (

bezel blank, remove the bezel blank. See

4. Follow the instructions for removing the optical drive if one was installed. Refer to

optical drive on page 32.

5. Align the small pins on the release latch with the small holes on the side of the drive and press the latch

firmly onto the drive.

Access panel on page 21).

Front bezel on page 22). If you are installing a device in a bay covered by a

Optical drive bezel blank on page 23 for more information.

Removing a slim

Drives 33

6. Slide the optical drive all the way into the drive bay (1) until the green latch locks onto the bottom of the

drive bay (2).

7. Connect the power cable and data cable to the back of the optical drive.

8. If installing a new drive, connect the opposite end of the data cable to one of the light blue SATA

connectors (labeled SATA1 and SATA2) on the system board.

9. Replace the front bezel.

10. Replace the computer access panel.

11. Reconnect the power cord and any external devices, then turn on the computer.

12. Lock any security devices that were disengaged when the access panel was removed.

Removing a hard drive

NOTE: Before you remove the old hard drive, be sure to back up the data from the old hard drive so that

you can transfer the data to the new hard drive.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the access panel (

3. Disconnect the power cable and data cable from the back of the hard drive.

Access panel on page 21).

34 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

4. Pull the green latch next to the drive outward (1) and slide the drive out of the bay (2).

Installing a hard drive

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the access panel (

3. You can install a 3.5-inch hard drive or a 2.5-inch hard drive with a 3.5-inch adapter bracket similar to

the example shown below.

●

Slide the 2.5-inch drive into the bay adapter bracket, ensuring the connector on the drive is fully
inserted into the connector on the adapter bracket.

Access panel on page 21).

Drives 35

●

Secure the drive to the bay adapter bracket by installing four black M3 adapter bracket screws
through the sides of the bracket into the drive.

4. Install four mounting screws into the sides of the drive (two on each side).

NOTE: The lower hard drive bay requires silver and blue mounting screws. The upper hard drive bay

requires all silver mounting screws. HP has supplied four extra silver mounting screws installed on the
chassis next to the hard drives that are used when installing a hard drive in the upper drive bay. Refer to

Drives on page 30 for an illustration of the location of the extra mounting screws. When replacing a

hard drive in the lower bay, use the four silver and blue mounting screws that were removed from the
old drive to install the new drive.

●

If installing a hard drive in the upper (secondary) drive bay, use the extra silver mounting screws
that can be retrieved from the chassis next to the hard drive bays.

36 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

●

If installing a hard drive in the lower (primary) drive bay, remove the silver and blue mounting
screws from the old drive and install them in the new drive.

5. Slide the drive into the drive bay, making sure to align the mounting screws with the guide slots, until

the drive snaps into place.

Drives 37

6. Connect the power cable (1) and data cable (2) to the back of the hard drive.

NOTE: The power cable for the hard drives is a two-headed cable that is routed from the power supply

to the rear of the hard drive bays.

7. If installing a new drive, connect the opposite end of the data cable to the appropriate system board

connector.

NOTE: You must connect the primary hard drive data cable to the dark blue connector labeled SATA0

to avoid any hard drive performance problems. If you are adding a second hard drive, connect the data
cable to one of the light blue SATA connector labeled SATA1 and SATA2.

8. Replace the computer access panel.

9. Reconnect the power cord and any external devices, then turn on the computer.

10. Lock any security devices that were disengaged when the access panel was removed.

38 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

Battery

The battery installed on the computer provides power to the real-time clock. When replacing the battery, use
a battery equivalent to the battery originally installed on the computer. The computer has a 3-volt lithium
coin cell battery installed.

WARNING! The computer contains an internal lithium manganese dioxide battery. There is a risk of fire 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 (140ºF).

Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or water.

Replace the battery only with the HP spare designated for this product.

CAUTION: 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 briefly touching a
grounded metal object.

NOTE: The lifetime of the lithium battery can be extended by plugging the computer into a live AC wall

socket. 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.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the access panel (

3. Locate the battery and battery holder on the system board.

NOTE: On some computer models, it may be necessary to remove an internal component to gain

access to the battery.

4. Depending on the type of battery holder on the system board, complete the following instructions to

replace the battery.

Type 1

a. Lift the battery out of its holder.

Access panel on page 21).

b. Slide the replacement battery into position, positive side up. The battery holder automatically

secures the battery in the proper position.

Battery 39

Type 2

a. 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).

b. To insert the new battery, slide one edge of the replacement battery under the lip of the holder

with the positive side up. Push the other edge down until the clamp snaps over the other edge of
the battery (2).

Type 3

a. Pull back on the clip (1) that is holding the battery in place, and remove the battery (2).

b. Insert the new battery and position the clip back into place.

NOTE: After the battery has been replaced, use the following steps to complete this procedure.

5. Replace the computer access panel.

6. Plug in the computer and turn on power to the computer.

7. Reset the date and time, your passwords, and any special system setups using Computer Setup.

8. Lock any security devices that were disengaged when the computer access panel was removed.

40 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

Drive power cable

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the access panel (

3. Disconnect the cable from the optical drive (1) and the hard drive (2)

4. Remove the cable from the clips on the base pan and on the side of the hard drive cage (3).

5. Disconnect the cable from the system board connector labeled SATAPWR0 (4), and then remove the

cable from the computer.

Access panel on page 21).

To reinstall the drive power cable, reverse the removal procedure.

Drive power cable 41

Front I/O and power switch assembly

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the computer access panel (

3. Remove the front bezel (

4. Remove the Torx T15 screw (1) that secures the assembly to the chassis, and then push the tab on the

right side of the assembly (2) to disengage it from the chassis.

Front bezel on page 22).

Access panel on page 21).

42 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

5. Remove the cables from the clips on the base pan.

6. Rotate the assembly into the chassis (1).

Front I/O and power switch assembly 43

7. Disconnect the four cables from the following system board connectors:

(2): Front USB (yellow)

(3): Front AUD (blue)

(4): Front USB3.0 (blue)

(5): PB/LED (black)

8. Remove the assembly from the inside of the computer.

To reinstall the assembly, reverse the removal procedure.

44 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

Heat sink

CAUTION: The bond between the heat sink and the processor may be very tight.

If the computer will power on, before removing the heat sink, turn on the computer until it warms the heat
sink. Warming the heat sink lessens the bond between the heat sink and the processor, thereby making
separating them easier.

Make sure not to pull the processor out of the socket when you lift the heat sink, especially if you cannot
warm the heat sink prior to removal. Inadvertently removing the processor can damage the pins.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the access panel (

3. Disconnect the fan cable from the system board connector labeled CPUFAN (1).

4. Loosen the four silver captive Torx T15 screws (2) that secure the heat sink to the system board.

CAUTION: Remove heat sink retaining screws in diagonally opposite pairs (as in an X) to even the

downward forces on the processor. The pins on the socket are very fragile and any damage to them may
require replacing the system board.

5. Lift the heat sink from atop the processor (3).

Access panel on page 21).

When reinstalling the heat sink, make sure that its bottom has been cleaned with an alcohol wipe and fresh
thermal grease has been applied to the top of the processor.

CAUTION: Heat sink retaining screws should be tightened in diagonally opposite pairs (as in an X) to evenly

seat the heat sink 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.

Heat sink 45

Processor

Description

Intel Core i5-4590, 3.3 GHz

Intel Core i5-4570, 3.2 GHz

Intel Core i3-4160, 3.6 GHz

Intel Core i3-4150, 3.5 GHz

Intel Core i3-4130, 3.4 GHz

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the access panel (

3. Remove the heat sink (

Access panel on page 21).

Heat sink on page 45).

4. Rotate the locking lever to its full open position (1).

5. Raise and rotate the microprocessor retainer to its fully open position (2).

6. 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.

Reverse the removal procedure to install a new processor.

NOTE: After installing a new processor onto the system board, 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://h18000.www1.hp.com/support/files.

46 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

Speaker

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the access panel (

3. Remove the speaker cable from the clip on the base pan.

4. Disconnect the speaker wire from the system board connector labeled SPKR (1).

5. From the inside of the chassis, remove the silver Torx T15 screw (2) that secures the speaker to the

chassis.

Access panel on page 21).

6. Remove the speaker from the chassis (3).

To replace the speaker, reverse the removal procedures.

Speaker 47

Rear chassis fan

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the access panel (

3. Remove the three silver Phillips screws that secure the fan to the rear of chassis.

4. Disconnect the fan control cable (1) from the system board connector labeled CHFAN2.

5. Lift the fan out of the chassis (2).

Access panel on page 21).

To install the fan assembly, reverse the removal procedure. Be sure to orient the air flow out of the unit.

48 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

Power supply

Description

Power supply, 280W, 92% efficient

Power supply, 280W, 90% efficient

Power supply, 280W, 85% efficient (for use only in China)

Power supply, 280W, standard

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the access panel (

Access panel on page 21).

3. Remove the four silver Torx T15 screws that connect the power supply to the chassis.

Power supply 49

4. Remove the power cable from the clip on the base pan.

5. Disconnect the power supply cable from the PWR system board connector (1) and the PWRCPU system

board connector (2).

6. Press the tab (3) on the base pan in front of the power supply that holds it in place.

7. Slide the power supply toward the front of the computer, rotate toward the fan so the power supply

clears the lip on the top of the chassis, and then lift the power supply out of the chassis (4).

To install the power supply, reverse the removal procedure.

50 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

System board

Description

System board for use in models without Windows 8.1

System board for use in models with Windows 8.1 Standard

System board for use in models with Windows 8.1 Professional

System board for use in NetClone models

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the access panel (

Access panel on page 21).

3. When replacing the system board, make sure the following components are removed from the defective

system board and installed on the replacement system board:

●

Memory modules (Memory on page 24)

●

Expansion cards (

●

Heat sink (

●

Processor (

Expansion cards on page 27)

Heat sink on page 45).

Processor on page 46)

4. Disconnect all cables connected to the system board, noting their location for reinstallation.

5. Remove the eight Torx T15 screws that secure the system board to the chassis.

System board 51

6. Slide the system board toward the front of the computer to disengage the I/O panel (1), and then lift the

system board out of the computer (2).

When reinstalling the system board, first insert the I/O panel back into the slots in the rear of the chassis, and
then align the board with the chassis screw holes.

NOTE: When replacing the system board, you must change the chassis serial number in the BIOS.

52 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

System board callouts

Sys Bd Label Color Component Sys Bd Label Color Component

PWRCPU White 4-pin processor power SATA1 Light

blue

PROCESSOR Silver Processor FRONT USB Yellow Front I/O

CPUFAN White Processor fan PSWD Green Clear system passwords

DIMM4 White Memory module (channel A) HLCK Black Hood lock

DIMM3 Black Memory module (channel A) CMOS Yellow Reset CMOS

DIMM2 White Memory module (channel B) BAT Black RTC battery

DIMM1 Black Memory module (channel B) HSENSE White Hood sensor

PB/LED Black Front I/O/power switch

connector

PWRCMD White Power supply connector X4PCIEXP White PCI Express x16 downshifted to a x4

SATAPWR0 Black Drive power connector X1PCIEXP2 Black PCI Express x1

FRONT AUD Blue Front I/O

Any SATA device other than the
primary hard drive

System board 53

P1 White 6-pin main power connector X1PCIEXP1 Black PCI Express x1

FRONT
USB3.0

MEDIA 3.0 Black Media card reader connector PAR Black Optional parallel port

SATA2 Light

SPKR White Speaker CHFAN2 Red Fan

SATA0 Dark

Blue Front I/O/power switch X16PCIEXP Black PCI Express x16

blue

blue

Any SATA device other than
the primary hard drive

Hard drive

COMB Black Optional second serial port

54 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis

5 Computer Setup (F10) Utility

Computer Setup (F10) Utilities

Use Computer Setup (F10) Utility to do the following:

●

Change factory default settings.

●

Set the system date and time.

●

Set, view, change, or verify the system configuration, including settings for processor, graphics,
memory, audio, storage, communications, and input devices.

●

Modify the boot order of bootable devices such as hard drives, optical drives, or USB flash media
devices.

●

Enable Quick Boot, which is faster than Full Boot but does not run all of the diagnostic tests run during a
Full Boot. You can set the system to:

■

always Fast Boot (default);

■

periodically Full Boot (from every 1 to 30 days); or

■

always Full Boot.

●

Select Post Messages Enabled or Disabled to change the display status of Power-On Self-Test (POST)
messages. Post Messages Disabled suppresses most POST messages, such as memory count, product
name, and other non-error text messages. If a POST error occurs, the error is displayed regardless of
the mode selected. To manually switch to Post Messages Enabled during POST, press any key (except

F1 through F12).

●

Establish an Ownership Tag, the text of which is displayed each time the system is turned on or
restarted.

●

Enter the Asset Tag or property identification number assigned by the company to this computer.

●

Enable the power-on password prompt during system restarts (warm boots) as well as during power­on.

●

Establish a setup password that controls access to the Computer Setup (F10) Utility and the settings
described in this section.

●

Secure integrated I/O functionality, including the serial, USB, or parallel ports, audio, or embedded NIC,
so that they cannot be used until they are unsecured.

●

Enable or disable removable media boot ability.

●

Solve system configuration errors detected but not automatically fixed during the Power-On Self-Test
(POST).

●

Replicate the system setup by saving system configuration information on a USB device and restoring it
on one or more computers.

●

Execute self-tests on a specified ATA hard drive (when supported by drive).

●

Enable or disable DriveLock security (when supported by drive).

Computer Setup (F10) Utilities 55

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 monitor light turns green to access the utility.

You can also press Esc to a menu that allows you to access different 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 monitor light turns green to access the utility.

NOTE: If the Computer Setup (F10) Utility is set to “fast boot”, use one of the following procedures to

access Computer Setup:

●

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 8.1 instructions for rebooting the computer into the Computer Setup (F10)
Utility.

3. A choice of five headings appears in the Computer Setup Utilities menu: File, Storage, Security, Power,

and Advanced.

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 File > Save Changes and Exit.

●

If you have made changes that you do not want applied, select Ignore Changes and Exit.

●

To reset to factory settings or previously saved default settings (some models), select Apply
Defaults and Exit. This option will restore the original factory system defaults.

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 CMOS could become corrupted. It is safe to turn off the computer only after exiting the F10
Setup screen.

56 Chapter 5 Computer Setup (F10) Utility

Computer Setup—File

NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration.

Table 5-1 Computer Setup—File

Option Description

System Information Lists:

About Displays copyright notice.

●

Product name

●

Manufacturer

●

SKU number

●

Processor type/speed/stepping

●

Installed memory size/speed, number of channels (single or dual) (if applicable)

●

Integrated MAC address for embedded, enabled NIC (if applicable)

●

Chassis serial number

●

Asset tracking number

●

System board ID and CT number

●

BIOS revision and date

●

Firmware version

Set Time and Date Allows you to set system time and date.

Flash System ROM Allows you to update the system ROM with a BIOS image file located on removable media.

Replicated Setup Save to Removable Storage Device

Saves system configuration to a formatted USB flash media device.

Restore from Removable Storage Device

Restores system configuration from a USB flash media device.

Default Setup Save Current Settings as Default

Saves the current system configuration settings as the default.

Restore Factory Settings as Default

Restores the factory system configuration settings as the default.

Apply Defaults and Exit Applies the currently selected default settings and clears any established passwords.

Ignore Changes and Exit Exits Computer Setup without applying or saving any changes.

Save Changes and Exit Saves changes to system configuration or default settings and exits Computer Setup.

Computer Setup (F10) Utilities 57

Computer Setup—Storage

NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration.

Table 5-2 Computer Setup—Storage

Option Description

Device Configuration Lists all installed BIOS-controlled storage devices.

When a device is selected, detailed information and options are displayed. The following options may be
presented:

●

●

●

NOTE: Displays for USB diskette drives.

Storage Options SATA Emulation

Allows you to choose how the SATA controller and devices are accessed by the operating system.
Supported options include: IDE, RAID, and AHCI (default).

CAUTION: SATA emulation changes may prevent access to existing hard drive data and degrade or

corrupt established volumes.

IDE Mode- This is the default and most backwards-compatible setting of the options. Operating systems
usually do not require additional driver support in IDE mode. Use this option for "normal" (non-RAID)
configurations

RAID - Allows DOS and boot access to RAID volumes. Use this mode with the RAID device driver loaded in
the operating system to take advantage of RAID features.

Hard Disk: Size, model, firmware version, serial number, connector color, SMART category.

CD-ROM: Model, firmware version, serial number, connector color (not included for USB CD-ROM).

Diskette: Model and firmware version.

AHCI Mode (default option) - Allows operating systems with AHCI device drivers loaded to take advantage
of more advanced features of the SATA controller.

NOTE: The RAID/AHCI device driver must be installed prior to attempting to boot from a RAID/ AHCI

volume. If you attempt to boot from a RAID/AHCI volume without the required device driver installed, the
system will crash (blue screen). RAID volumes may become corrupted if they are booted to after disabling
RAID.

Removable Media Boot

Enables/disables ability to boot the system from removable media. Default is enabled.

Boot Order Allows you to:

●

UEFI Boot Sources: Specify the order in which EFI 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. Each device on the list may be individually excluded from or included for consideration as a
bootable operating system source.

EFI boot sources always have precedence over legacy boot sources.

●

Legacy Boot Sources: 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. Each device on the list may be individually excluded from or included for
consideration as a bootable operating system source.

Specify the order of attached hard drives. The first hard drive in the order will have priority in the
boot sequence and will be recognized as drive C (if any devices are attached).

NOTE: To drag a device to a preferred place, press Enter. To remove the device from consideration as a

bootable device, press F5.

You can use F5 to disable individual boot items, as well as disable EFI boot and/or legacy boot.

58 Chapter 5 Computer Setup (F10) Utility

Table 5-2 Computer Setup—Storage (continued)

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 specified in Boot Order, restart the
computer and press Esc (to access the boot menu) and then F9 (Boot Order), or only F9 (skipping the boot
menu) when the monitor light turns green. 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.

Computer Setup—Security

NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration.

Table 5-3 Computer Setup—Security

Option Description

Setup Password Allows you to set and enable a setup (administrator) password.

NOTE: If the setup password is set, it is required to change Computer Setup options, flash the ROM, and

make changes to certain plug and play settings under Windows.

Power-On Password Allows you to set and enable a power-on password. 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.

Password Options

(This selection appears
only if a power-on
password or setup
password is set.)

Smart Cover Only displays if the computer is equipped with a smart cover.

Allows you to enable/disable:

●

Lock Legacy Resources (determines whether or not Windows Device Manager is allowed to change
resource settings for serial and parallel ports).

●

Stringent security (enabling the stringent password disables the ability to reset the password by
moving the jumper on the system board). Default is disabled.

CAUTION: If you enable the stringent security feature and you forget the setup password or the

power-on password, the computer is inaccessible and can no longer be used.

If you lose or forget the password, the system board must be replaced. This scenario is not covered
under warranty.

To prevent the computer from becoming permanently unusable, record your configured setup
password or power-on password in a safe place away from your computer. Without these
passwords, the computer cannot be unlocked.

●

Setup Browse Mode (appears if a setup password is set) (allows viewing, but not changing, the F10
Setup Options without entering setup password). Default is enabled.

●

Password prompt on F9 & F12 (requires setup password to use these boot functions). Default is
enabled.

●

Network Server Mode. Default is disabled.

Allows you to:

●

Cover Lock - allows you to lock or unlock the cover.

●

Cover Removal Sensor - allows you to set the sensor to Disable/Notify User/Setup Password.

NOTE: Notify User alerts the user that the sensor has detected that the cover has been removed. Setup

Password requires that the setup password be entered to boot the computer if the sensor detects that
the cover has been removed.

Computer Setup (F10) Utilities 59

Table 5-3 Computer Setup—Security (continued)

Device Security Allows you to set Device Available/Device Hidden (default is Device Available) for:

●

Embedded security device

●

System audio

●

Network controller

●

Serial port (if applicable)

●

Parallel port (if applicable)

●

SATA ports (varies by model)

USB Security Allows you to set Enabled/Disabled (default is Enabled) for:

●

Front USB Ports

●

Rear USB Ports

●

Accessory USB Ports

Slot Security Allows you to disable any PCI Express slot. Default is enabled.

Network Boot Enables/disables the computer’s ability to boot from an operating system installed on a network server.

(Feature available on NIC models only; the network controller must be either a PCI expansion card or
embedded on the system board.) Default is enabled.

System IDs Allows you to set:

●

Asset tag (18-byte identifier), a property identification number assigned by the company to the
computer.

●

Ownership tag (80-byte identifier) displayed during POST.

●

Universal Unique Identifier (UUID) number. The UUID can only be updated if the current chassis
serial number is invalid. (These ID numbers are normally set in the factory and are used to uniquely
identify the system.)

●

Keyboard locale setting for System ID entry.

Master Boot Security
Record

Enables/disables Master Boot Record (MBR) security.

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.

When MBR Security is enabled, the BIOS prevents any changes being made to the MBR of the current
bootable disk while in MS-DOS or Windows Safe Mode.

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

●

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 modified the

MBR, may cause the data on the disk to become inaccessible. Only restore a previously saved MBR if you
are confident that the current bootable disk's MBR has been corrupted or infected with a virus.

60 Chapter 5 Computer Setup (F10) Utility

Table 5-3 Computer Setup—Security (continued)

System Security (these

options are hardware
dependent)

OS management of Embedded Security Device (enable/disable) - This option allows the user to limit OS

DriveLock Security Allows you to assign or modify a master or user password for hard drives. When this feature is enabled,

NOTE: Available options are displayed depending on system configuration.

Data Execution Prevention (enable/disable) - Helps prevent operating system security breaches. Default
is enabled.

Virtualization Technology (enable/disable) - Controls the virtualization features of the processor.
Changing this setting requires turning the computer off and then back on. Default is disabled.

control of the Embedded Security Device. Default is enabled. This option is automatically disabled if
Trusted Execution Technology is enabled.

●

Reset of Embedded Security Device through OS (enable/disable) - This option allows the user to
limit the operating system ability to request a Reset to Factory Settings of the Embedded Security
Device. Default is disabled.

NOTE: To enable this option, a Setup password must be set.

●

No PPI provisioning (Windows 8.1 only) - This option lets you set Windows 8.1 to bypass the PPI
(Physical Presence Interface) requirement and directly enable and take ownership of the TPM on
first boot. You cannot change this setting after TPM is owned/initialized, unless the TPM is reset.
Default is disabled for non-Windows 8.1 systems, and enabled for Windows 8.1.

●

Allow PPI policy to be changed by OS. Enabling this option allows the operating system to execute
TPM operations without Physical Presence Interface. Default is disabled.

NOTE: To enable this option, a Setup password must be set.

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.

Secure Boot
Configuration

NOTE: This selection will only appear when at least one drive that supports the DriveLock feature is

attached to the system.

●

Legacy Support—Enable/Disable. Allows you to turn off all legacy support on the computer,
including booting to DOS, running legacy graphics cards, booting to legacy devices, and so on. If set
to disable, legacy boot options in Storage > Boot Order are not displayed. Default is enabled.

●

Secure Boot—Enable/Disable. Allows you to make sure an operating system is legitimate before
booting to it, making Windows resistant to malicious modification from preboot to full OS booting,
preventing firmware attacks. UEFI and Windows Secure Boot only allow code signed by pre­approved digital certificates to run during the firmware and OS boot process. Default is disabled,
except for Windows 8.1 systems which have this setting enabled. Secure Boot enabled also sets
Legacy Support to disabled.

●

Key Management—This option lets you manage the custom key settings.

◦

Clear Secure Boot Keys—Don't Clear/Clear. Allows you to delete any previously loaded custom
boot keys. Default is Don't Clear.

◦

Key Ownership—HP Keys/Custom Keys. Selecting Custom Mode allows you to modify the
contents of the secure boot signature databases and the platform key (PK) that verifies
kernels during system start up, allowing you to use alternative operating systems. Selecting
HP Keys causes the computer boot using the preloaded HP-specific boot keys. Default is HP
Keys.

●

Fast Boot—Enable/Disable. Fast boot disables the ability to interrupt boot, such as pressing f keys
to access items before the operating system loads. Default is disabled.

NOTE: If Windows 8.1 detects a serious error, it will interrupt the boot process automatically and

display advanced boot options.

From Windows 8.1, you can press Shift
a device or troubleshoot your computer.

and select Restart to access the screen that lets you boot to

Computer Setup (F10) Utilities 61

Computer Setup—Power

NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration.

Table 5-4 Computer Setup—Power

Option Description

OS Power Management

Hardware Power
Management

●

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.

●

Idle Power Savings—Extended/Normal. Allows certain operating systems to decrease the
processors power consumption when the processor is idle. Default is extended.

●

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: For Windows 8.1 systems with Fast Boot support, a normal shutdown goes to the S4 state.

◦

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 Off) = LED is off.

SATA Power Management – Enables or disables SATA bus and/or device power management. Default is
enabled.

PCI Express Power Management – Sets Active State Power Management (ASPM) of the bus. ASPM lets you
set lower power modes that activate when the bus is not being used. Options are Disabled, LOs, L1, LOs
and L1. Default is ASPM Disabled.

S5 Maximum Power Savings – Turns off power to all nonessential hardware when system is off to meet
EUP Lot 6 requirement of less than 0.5 Watt power usage. Default is disabled.

Thermal Fan idle mode—This bar graph controls the minimum permitted fan speed.

NOTE: This setting only changes the minimum fan speed. The fans are still automatically controlled.

62 Chapter 5 Computer Setup (F10) Utility

Computer Setup—Advanced

NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration.

Table 5-5 Computer Setup—Advanced (for advanced users)

Option Heading

Power-On Options Allows you to set:

●

●

●

●

●

POST mode (QuickBoot, Clear Memory, FullBoot, or FullBoot Every x Days).

◦

QuickBoot (default) = Do not clear memory or perform a memory test.

◦

FullBoot = Memory test (count) on cold boot. Clears memory on all boots.

◦

Clear Memory = No memory count on cold boot. Clears memory on all boots.

◦

FullBoot Every x Days = Memory count on 1st cold boot on or after the xth day. No more
memory counts until 1st cold boot on or after x days. Clears memory on all boots.

POST messages (enable/disable). Enabling this feature will cause the system to display POST error
messages, which are error messages displayed on the monitor during the Power On Self Test if the
BIOS encounters some kind of problem while starting the PC. A POST error message will only display
on screen if the computer is capable of booting this far. If the POST detects an error before this
point, a beep code is generated instead. Default is disabled.

Press the ESC key for Startup Menu (Enable/Disable). This feature controls the display of the text
“Press the ESC key for Startup Menu” during POST. This text does not display on Windows 8.1
systems with Fast Boot support. Other text also will not display (for example, Ownership Tag).
Default is enabled.

Option ROM Prompt (enable/disable). Enabling this feature will cause the system to display a
message before loading option ROMs. Default is enabled.

After Power Loss (off/on/previous state). Default is Power off. Setting this option to:

◦

Power off—causes the computer to remain powered off 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 you turn off power to the computer using the switch on a power strip, you will not be able to

use the suspend/sleep feature or the Remote Management features.

●

POST Delay (in seconds). Enabling this feature will add a user-specified delay to the POST process.
This delay is sometimes needed for hard disks on some PCI cards that spin up very slowly, so slowly
that they are not ready to boot by the time POST is finished. The POST delay also gives you more
time to select F10 to enter Computer (F10) Setup. Default is None.

●

Bypass F1 Prompt on Configuration Changes (Enable/Disable). Allows you to set the computer not
to confirm when changes were made. Default is disabled.

●

Remote Wakeup Boot Source (remote server/local hard drive). Default is Local hard drive.

●

Factory Recovery Boot Support (Enable/Disable). Provides the ability for the BIOS to redirect the
boot to the recovery partition on the user hard drive, if present. Some versions of the recovery
software honor the F11 key press even when this feature is disabled by the BIOS. Default is
disabled.

●

POST Memory Manager Runtime Allocation (Enable/Disable). Enable this option to avoid an “Unable
to Resume” error when attempting to resume from hibernation with EFI installations of Windows 7
64-bit. Default is disabled.

BIOS Power-On Allows you to set the computer to turn on automatically at a time you specify.

Onboard Devices Allows you to set resources for or disable Legacy devices.

Computer Setup (F10) Utilities 63

Table 5-5 Computer Setup—Advanced (for advanced users) (continued)

Select the Legacy device's IRQ, DMA, and I/O Range. The settings may not take effect for all operating
systems. To hide a device from the operating system, see Security > Device Security.

Bus Options Allows you to enable or disable:

●

PCI SERR# Generation. Default is enabled.

●

PCI VGA Palette Snooping, which sets the VGA palette snooping bit in PCI configuration space; only
needed when more than one graphics controller is installed. Default is disabled.

Device Options Allows you to set:

●

Num Lock State at Power-On (off/on). Default is off.

●

Integrated Video (enable/disable). Use this option to disable the integrated video controller when
another video controller is present in the system, or to configure UMA memory settings. Default is
‘Automatic UMA Size’.

If you select ‘Selectable UMA Size’, a new menu item appears in the Device Options dialog box to
allow you to select the amount of memory to allocate to video memory.

●

Internal Speaker (enable/disable). Does not affect external speakers. Default is enabled.

●

Multi-Processor (enable/disable). Use this option to disable multi-processor support under the OS.
Default is enabled.

●

Hyper threading (enable/disable). Use this option to disable processor hyper-threading.

●

USB EHCI Port Debug (enable/disable). Forces all USB ports to use USB 2.0 for debugging utilities
and other applications that do not support USB 3.0. Default is disabled.

●

USB 3.0 BIOS Driver Support (enable/disable). Default is disabled.

VGA Configuration Displayed only if there is an add-in video card in the system. Allows you to specify which VGA controller

will be the “boot” or primary VGA controller.

Management Operations Allows you to set:

●

AMT (enable/disable). Allows you to enable or disable functions of the embedded Management
Engine (ME) such as Active Management Technology (AMT). If set to disable, the Management
Engine is set to a temporarily disabled state and will not provide functions beyond necessary
system configuration. Default is enabled.

●

Unconfigure AMT/ME (enable/disable). Allows you to unconfigure any provisioned management
settings for AMT. The AMT settings are restored to factory defaults. This feature should be used
with caution as AMT will not be able to provide any set AMT management functions once
unconfigured. Default is disabled.

●

Hide Unconfigure ME Confirmation Prompt (enable/disable). Allows you to set the system to not
display the confirmation to unconfigure ME.

●

Watchdog Timer (enable/disable). 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. Default is enabled.

Option ROM Launch
Policy

Let you set the launch policy for option ROMs. An Option ROM typically consists of firmware that is called
by the system BIOS. For example, an adapter card that controls a boot device might contain firmware that
is used to connect the device to the system once the Option ROM is loaded.

●

PXE Option ROMs (legacy only/EFI only/do not launch)

●

Storage Option ROMs (legacy only/EFI only/do not launch)

●

Video Option ROMs (legacy only/EFI only)

Connected BIOS Enables or disables the feature that updates the BIOS using the network.

64 Chapter 5 Computer Setup (F10) Utility

Table 5-5 Computer Setup—Advanced (for advanced users) (continued)

●

Connected BIOS (Enabled/Disabled). Enables or disables BIOS network support. Default is enabled.

●

Use Proxy (Enabled/Disabled). When enabled, displays Proxy Address field to configure the URL of
the proxy server. Default is disabled.

Update BIOS via Network Allows you to use F10 Setup to check for BIOS updates from hp.com and apply them using either a

manual selection or an automatically scheduled check on boot-up.

NOTE: If Windows BitLocker Drive Encryption (BDE) is enabled, HP requires that BDE be suspended

temporarily before the BIOS is flashed. You must get the BDE recovery password and PIN before
suspending BDE. After updating the BIOS, you can resume BDE.

●

Update BIOS via Network (Enabled/Disabled). Enables or disables BIOS network support. Default is
enabled.

●

Update Source (HP/Custom). Selects hp.com or a locally managed custom address to serve BIOS
updates. Default is HP.

Update Address. If Custom is selected for Update Source, the URL of the locally managed server.

●

Automatic BIOS Update Setting (Disabled, Check and install all updates automatically, Check and
install only important updates automatically, Check for updates but let me decide whether to install
them). Enables or disables the network BIOS update scheduler. Default is disabled.

Automatic Update Frequency (Daily, Weekly, Monthly). Sets the frequency of checks to the BIOS
update server. If a newer version of BIOS is available on the network server, the system will prompt
to update the BIOS. Default is Monthly.

Force Check on Next Reboot (Disabled/Enabled). During the next boot, checks whether an updated
BIOS is available. This value is independent of the Automatic Update Frequency setting. Default is
disabled.

Recovering the Configuration Settings

This method of recovery requires that you first perform the Save to Removable Media command with the
Computer Setup (F10) Utility before Restore is needed. (See
Computer Setup—File table.)

NOTE: It is recommended that you save any modified computer configuration settings to a USB flash media

device and save the device for possible future use.

To restore the configuration, insert the USB flash media device with the saved configuration and perform the
Restore from Removable Media command with the Computer Setup (F10) Utility. (See

on page 57 in the Computer Setup—File table.)

Computer Setup—File on page 57 in the

Computer Setup—File

Recovering the Configuration Settings 65

6 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 specific error messages that may appear on the screen during Power-On Self-

Test (POST) at startup, refer to Appendix A,

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
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.

POST error messages on page 98.

http://www.hp.com/ergo for

●

Run the HP diagnostic tool.

●

Run the hard drive self-test in Computer Setup. Refer to
more information.

●

Check the Power LED on the front of the computer to see if it is flashing red. The flashing lights are error
codes that will help you diagnose the problem. Refer to Appendix A,
for more information.

●

If the screen is blank, plug the monitor into a different video port on the computer if one is available. Or,
replace the monitor with a monitor that you know is functioning properly.

●

If you are working on a network, plug another computer with a different 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 Configuration.”

●

Refer to the comprehensive online technical support at

●

Refer to

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:

Helpful hints on page 67 in this guide.

Computer Setup (F10) Utility on page 55 for

POST error messages on page 98

http://www.hp.com/support.

http://www.hp.com/go/ispe.

Access the Business Support Center (BSC) at
information, software and drivers, proactive notification, and worldwide community of peers and HP experts.

66 Chapter 6 Troubleshooting without diagnostics

http://www.hp.com/go/bizsupport for the latest online support

If it becomes necessary to call for technical assistance, be prepared to do the following to ensure that your
service call is handled properly:

●

Be in front of your computer when you call.

●

Write down the computer serial number, product ID number, and monitor serial 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 files 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, monitor, or software, see the following list of general
suggestions before taking further action:

●

Check that the computer and monitor are plugged into a working electrical outlet.

●

Check that the voltage select switch (some models) is set to the appropriate voltage for your region
(115V or 230V).

●

Check that the computer is turned on and the white power light is on.

●

Check that the monitor is turned on and the green monitor light is on.

●

Check the Power LED on the front of the computer to see if it is flashing red. The flashing lights are error
codes that will help you diagnose the problem. Refer to Appendix A,
for more information.

●

Turn up the brightness and contrast controls of the monitor if the monitor is dim.

●

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.

●

Reconfigure the computer after installing a non-plug and play expansion board or other option. See

Solving Hardware Installation Problems on page 85 for instructions.

●

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.

POST error messages on page 98

●

Remove all bootable media (CD/DVD or USB device) from the system before turning it on.

Helpful hints 67

●

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.

●

If the system has multiple video sources (embedded, PCI, or PCI-Express adapters) installed (embedded
video on some models only) and a single monitor, the monitor must be plugged into the monitor
connector on the source selected as the primary VGA adapter. During boot, the other monitor
connectors are disabled and if the monitor is connected into these ports, the monitor will not function.
You can select which source will be the default VGA source in Computer Setup.

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.

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 briefly when booting the
computer.

Computer appears locked up and will not turn off 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 8.1 instructions for rebooting the computer
into the Computer Setup (F10) Utility.

until the computer turns off.

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.

68 Chapter 6 Troubleshooting without diagnostics

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.

Cursor will not move using the arrow keys on the keypad.

Cause Solution

The Num Lock key is turned on. Press the Num Lock key. The Num Lock light must be off if you

There is no sound or sound volume is too low.

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.

To access Control Panel in Windows 7, select Start, and then
select Control Panel.

To access Control Panel in Windows 8.1, from the Start screen,
type c, and then select Control Panel from the list of
applications.

want to use the arrow keys on the keypad. You can also disable or
enable the Num Lock key in Computer Setup at Advanced >

Device Options.

Cause Solution

System volume may be set low or muted. 1. Check the Computer Setup settings to make sure the

internal system speaker is not muted (this setting does not
affect the external speakers).

2. Make sure the external speakers are properly connected

and powered on and that the speakers' volume control is set
correctly.

3. 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.

Solving general problems 69

Poor performance.

Cause Solution

Processor is too hot. 1. Make sure airflow to the computer is not blocked. Leave a

10.2-cm (4-inch) clearance on all vented sides of the
computer and above the monitor to permit the required
airflow.

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

Low on memory. Add more memory.

Hard drive fragmented. Defragment hard drive.

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. Windows 7:

hard drive.

Restart the computer.

1. Close unnecessary applications to free up memory.

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 Configuration Utility,

clear applications that you do not want to launch
automatically, and the click OK.

Some software applications, especially games, are stressful on
the graphics subsystem.

Cause unknown. Restart the computer.

70 Chapter 6 Troubleshooting without diagnostics

In Windows 8.1:

a. On the Start screen, right-click, and then select the All

apps icon.

b. Under Windows System, click Run.

c. Type msconfig, and then press Enter.

d. On the Startup tab of the System Configuration Utility,

clear applications that you do not want to launch
automatically, and the click OK.

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.

Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second
pause, and the computer beeps two times. (Beeps stop after fifth iteration but LEDs continue flashing).

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.

System does not power on and the LEDs on the front of the computer are not flashing.

Cause Solution

System unable to power on. Press and hold the power button for less than 4 seconds. If the

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.

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 off, then replace

the power supply.

6. Replace the system board.

Solving general problems 71

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 off automatically and the Power LED flashes Red two times, once every second, followed by a two second
pause, and the computer beeps two times. (Beeps stop after fifth iteration but LEDs continue flashing.)

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.

Power LED flashes Red four times, once every second, followed by a two second pause, and the computer beeps four times.
(Beeps stop after fifth iteration but LEDs continue flashing.)

Select the proper AC voltage using the selector switch.

Replace the power supply.

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.

Cause Solution

Power failure (power supply is overloaded). 1. If equipped with a voltage selector, check that the voltage

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 off 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.

72 Chapter 6 Troubleshooting without diagnostics

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

Disk transaction problem.

Cause Solution

a drive. Select Properties, and then select the Tools tab.
Under Error-checking click Check Now.

In Windows 8.1, on the Start screen type e, and then select
File Explorer from the list of applications. In the left
column, expand Computer, 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.

Either the directory structure is bad or there is a problem with a
file.

Drive not found (identified).

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 8.1, on the Start screen type e, and then click File

Explorer from the list of applications. In the left column, expand
Computer, right-click on a drive, select Properties, and then

select the Tools tab. Under Error checking click Check.

See reconfiguration directions in the

Installation Problems on page 85 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 > Power-On
Options.

Run the Computer Setup utility and ensure Device Available is
selected for the device's SATA port in Security > Device Security.

Solving Hardware

Drive responds slowly immediately after power-up. Run Computer Setup and increase the POST Delay in Advanced >

Power-On Options.

Solving hard drive problems 73

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 files 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 first in a multi-hard drive
configuration.

Bootable hard drive is not listed first in the Boot Order. Run the Computer Setup utility and select Storage > Boot Order

Computer will not boot from hard drive.

Cause Solution

The device is attached to a SATA port that has been hidden in
Computer Setup.

▲

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 files for the appropriate operating system.

the Storage > Boot Order list.

If attempting to boot from a hard drive, ensure it is attached to
the system board dark blue SATA connector.

and ensure the bootable hard drive is listed immediately under
the Hard Drive entry.

1. Check SATA cable connections.

2. Run the Computer Setup utility and ensure Device Available

is selected for the device's SATA port in Security > Device
Security.

Boot order is not correct. Run the Computer Setup utility and change boot sequence in

Storage > Boot Order.

Hard Drive's “Emulation Type” is set to “None.” (some models) Run the Computer Setup utility and change the “Emulation Type”

to “Hard Disk” in the device's details under Storage > Device
Configuration.

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

beeps are heard. See Appendix A,

on page 98 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 off the power. To restart the computer, press the
power button again.

POST error messages

74 Chapter 6 Troubleshooting without diagnostics

Solving media card reader problems

Media card will not work in a digital camera after formatting it in Windows.

Cause Solution

By default, Windows will format any media card with a capacity
greater than 32MB with the FAT32 format. Some digital cameras
use the FAT (FAT16 & FAT12) format and can not operate with a
FAT32 formatted card.

A write-protected or locked error occurs when attempting to write to the media card.

Cause Solution

Media card is locked. Locking the media card is a safety feature
that prevents writing to and deleting from an SD/Memory Stick/
PRO card.

Can not write to the media card.

Cause Solution

The media card is a read-only memory (ROM) card. Check the manufacturer’s documentation included with your card

Media card is locked. Locking the media card is a safety feature
that prevents writing to and deleting from an SD/Memory Stick/
PRO card.

Either format the media card in the digital camera or select FAT
file system to format the media card in a computer with Windows.

If using an SD card, make sure that the lock tab located on the
right of the SD card is not in the locked position. If using a
Memory Stick/PRO card, make sure that the lock tab located on
the bottom of the Memory Stick/PRO card is not in the locked
position.

to see if it writable. Refer to the previous section for a list of
compatible cards.

If using an SD card, make sure that the lock tab located on the
right of the SD card is not in the locked position. If using a
Memory Stick/PRO card, make sure that the lock tab located on
the bottom of the Memory Stick/PRO card is not in the locked
position.

Unable to access data on the media card after inserting it into a slot.

Cause Solution

The media card is not inserted properly, is inserted in the wrong
slot, or is not supported.

Do not know how to remove a media card correctly.

Cause Solution

The computer’s software is used to safely eject the card. In Windows 7, click Start, select Computer, right-click on the

Ensure that the card is inserted properly with the gold contact on
the correct side. The green LED will light if inserted properly.

corresponding drive icon, and then select Eject. Pull the card out
of the slot.

In Windows 8.1, on the Start screen, type e, and then click File
Explorer from the list of applications. Expand Computer, right­click on the corresponding drive icon, and then select Eject. Pull
the card out of the slot.

Solving media card reader problems 75

Do not know how to remove a media card correctly.

Cause Solution

NOTE: Never remove the card when the green LED is flashing

After installing the media card reader and booting to Windows, the reader and the inserted cards are not recognized by the
computer.

Cause Solution

The operating system needs time to recognize the device if the
reader was just installed into the computer and you are turning
the PC on for the first time.

After inserting a media card in the reader, the computer attempts to boot from the media card.

Cause Solution

The inserted media card has boot capability. 1. If you do not want to boot from the media card, remove it

Solving display problems

If you encounter display problems, see the documentation that came with the monitor and to the common
causes and solutions listed in the following table.

Blank screen (no video).

Cause Solution

Wait a few seconds so that the operating system can recognize
the reader and the available ports, and then recognize the media
inserted in the reader.

during boot or do not select the option to boot from the
inserted media card during the boot process.

2. During POST (Power On Self-Test), press F9 to modify the

boot menu.

3. Change the boot sequence in F10 Computer Setup.

Monitor is not turned on and the monitor light is not on. Turn on the monitor and check that the monitor light is on.

Bad monitor. Try a different monitor.

The cable connections are not correct. Check the cable connection from the monitor to the computer and

You may have a screen blanking utility installed or energy saver
features are enabled.

System ROM is corrupted; system is running in Boot Block
Emergency Recovery Mode (indicated by eight beeps).

You are using a fixed-sync monitor and it will not sync at the
resolution chosen.

Computer is in Sleep state. Press the power button to resume from Sleep state.

76 Chapter 6 Troubleshooting without diagnostics

to the electrical outlet.

Press any key or click the mouse button and type your password
(if set).

Reflash the system ROM with the latest BIOS image.

Be sure that the monitor can accept the same horizontal scan rate
as the resolution chosen.

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.

Blank screen (no video).

Cause Solution

Monitor cable is plugged into the wrong connector. Systems may have a monitor connection on both the

Monitor settings in the computer are not compatible with the
monitor.

Monitor is configured to use an input that is not active. Use the monitor's on-screen menu controls to select the input

Blank screen and the power LED flashes Red five times, once every second, followed by a two second pause, and the computer
beeps five times. (Beeps stop after fifth iteration but LEDs continue flashing.)

Cause Solution

motherboard or an add-in card. Try moving the monitor
connection to a different connector on the back of the computer

1. In Control Panel, select Category from the View by list, then

under Appearance and Personalization, select Adjust
screen resolution.

To access Control Panel in Windows 7, click Start, and then
select Control Panel.

To access Control Panel in Windows 8.1, from the Start
screen, type c, and then select Control Panel from the list
of applications.

2. Expand the Resolution box, and then use the sliding control

to reset the resolution.

that is being driven by the system. Refer to the monitor's user
documentation for more information on the on-screen controls
and settings.

Pre-video memory error. 1. Reseat DIMMs. Power on the system.

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.

Blank screen and the power LED flashes Red six times, once every second, followed by a two second pause, and the computer
beeps six times. (Beeps stop after fifth iteration but LEDs continue flashing.)

Cause Solution

Pre-video graphics error. For systems with a graphics card:

1. Reseat the graphics card (if applicable). Power on the

system.

2. Replace the graphics card (if applicable).

3. Replace the system board.

For systems with integrated graphics, replace the system board.

Solving display problems 77

Blank screen and the power LED flashes Red seven times, once every second, followed by a two second pause, and the computer
beeps seven times. (Beeps stop after fifth iteration but LEDs continue flashing.)

Cause Solution

System board failure (ROM detected failure prior to video). Replace the system board.

Monitor does not function properly when used with energy saver features.

Cause Solution

Monitor without energy saver capabilities is being used with
energy saver features enabled.

Dim characters.

Cause Solution

The brightness and contrast controls are not set properly. Adjust the monitor brightness and contrast controls.

Cables are not properly connected. Check that the graphics cable is securely connected to the

Blurry video or requested resolution cannot be set.

Cause Solution

If the graphics controller was upgraded, the correct graphics
drivers may not be loaded.

Monitor is not capable of displaying requested resolution. Change requested resolution.

Graphics card is bad. Replace the graphics card.

Disable monitor energy saver feature.

graphics card (if applicable) or video connector and the monitor.

Install the video drivers included in the upgrade kit.

The picture is broken up, rolls, jitters, or flashes.

Cause Solution

The monitor connections may be incomplete or the monitor may
be incorrectly adjusted.

Monitor needs to be degaussed. Degauss the monitor. Refer to the documentation that came with

78 Chapter 6 Troubleshooting without diagnostics

1. Be sure the monitor cable is securely connected to the

computer.

2. In a two-monitor system or if another monitor is in close

proximity, be sure the monitors are not interfering with
each other’s electromagnetic field by moving them apart.

3. Fluorescent lights or fans may be too close to the monitor.

the monitor for instructions.

Image is not centered.

Cause Solution

Position may need adjustment. Press the monitor's Menu button to access the OSD menu. Select

ImageControl/ Horizontal Position or Vertical Position to adjust
the horizontal or vertical position of the image.

“No Connection, Check Signal Cable” displays on screen.

Cause Solution

Monitor video cable is disconnected. Connect the video cable between the monitor and computer.

CAUTION: Ensure that the computer power is off while

connecting the video cable.

“Out of Range” displays on screen.

Cause Solution

Video resolution and refresh rate are set higher than what the
monitor supports.

Restart the computer and enter Safe Mode. Change the settings
to a supported setting then restart the computer so that the new
settings take effect.

To enter Safe Mode in Windows 7:

1. Restart the computer.

2. Press and hold the F8 key as your computer restarts, before

the Windows logo appears. If the Windows logo appears,
you must restart the computer and try again.

3. On the Advanced Boot Options screen, use the arrow keys to

highlight the safe mode option you want, and then press

Enter.

4. Log on to your computer with a user account that has

administrator rights.

When your computer is in safe mode, Safe Mode displays in
the corners of your monitor. To exit safe mode, restart your
computer and let Windows start normally.

To enter Safe Mode in Windows 8.1:

1. Press the Windows logo + l to open the Settings charm.

2. Select Change PC Settings, select General, and then under

Advanced startup, click Restart now.

3. Select Troubleshoot, select Advanced options, select

Startup Settings, and then click Restart.

4. Use the function keys or number keys to select the safe

mode option you want.

When your computer is in safe mode, Safe Mode displays in
the corners of your monitor. To exit safe mode, restart your
computer and let Windows start normally.

Solving display problems 79

High pitched noise coming from inside a flat panel monitor.

Cause Solution

Brightness and/or contrast settings are too high. Lower brightness and/or contrast settings.

Fuzzy focus; streaking, ghosting, or shadowing effects; horizontal scrolling lines; faint vertical bars; or unable to center the
picture on the screen (flat panel monitors using an analog VGA input connection only).

Cause Solution

Flat panel monitor’s internal digital conversion circuits may be
unable to correctly interpret the output synchronization of the
graphics card.

Graphics card is not seated properly or is bad (some models). 1. Reseat the graphics card.

Certain typed symbols do not appear correct.

Cause Solution

The font you are using does not support that particular symbol. Use the Character Map to locate and select the appropriate

1. Select the monitor’s Auto-Adjustment option in the

monitor’s on-screen display menu.

2. Manually synchronize the Clock and Clock Phase on-screen

display functions. To download a SoftPaq that will assist
you with the synchronization, go to the following Web site,
select the appropriate monitor, and download either
SP32347 or SP32202:

2. Replace the graphics card.

symbol. You can copy the symbol from the Character Map into a
document.

In Windows 7, click Start, select All Programs, select

Accessories, select System Tools, and then select Character
Map.

In Windows 8.1, on the Start screen, type ch, and then select
Character Map from the list of applications.

http://www.hp.com/support

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.

80 Chapter 6 Troubleshooting without diagnostics

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

that Mute is not selected and use the volume slider to adjust the
volume.

NOTE: In Windows 8.1, the taskbar is available at the bottom of

the Desktop screen.

Audio is hidden in Computer Setup. Enable the audio in Computer Setup: Security > Device Security >

The external speakers are not turned on. Turn on the external speakers.

The audio device may be connected to the wrong jack. Ensure that the device is connected to the correct jack on the

External speakers plugged into the wrong audio jack on a recently
installed sound card.

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

The application is set to use a different audio device than
speakers.

System Audio.

computer. The rear audio jack output is the green receptacle. The
speakers should be plugged into the line-out jack and the
headphones should be plugged into the headphone jack.

See the sound card documentation for proper speaker
connection. The rear audio jack output is the green receptacle.

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.

> Device Options > Internal Speaker.

Some graphics cards support audio over the DisplayPort
connection (if applicable), so multiple audio devices may be listed
in Device Manager. Make sure the correct device is being used.

To access Device Manager in Windows 7, click Start, select
Control Panel, and then select Device Manager.

To access Device Manager in Windows 8.1, from the Start screen,
type c, select Control Panel from the list of applications, and then
select Device Manager.

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 different audio
device as the default output device than what is expected.

Sound from headphones is not clear or muffled.

Cause Solution

Headphones are plugged into the rear audio output connector.
The rear audio output connector is for powered audio devices and
is not designed for headphone use.

Set the operating system to use the correct audio device.

Plug the headphones into the headphone connector on the front
of the computer.

Solving audio problems 81

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

hard disk. You can also try recording the audio file in a
compressed format.

Line-in jack is not functioning properly.

Cause Solution

Jack has been reconfigured in the audio driver or application
software.

There is no sound or sound volume is too low.

Cause Solution

The application is set to use a different audio device than
speakers.

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 different audio
device as the default output device than what is expected.

Solving printer problems

In the audio driver or application software, reconfigure the jack or
set the jack to its default value.

Some graphics cards support audio over the DisplayPort
connection (if applicable), so multiple audio devices may be listed
in Device Manager. Make sure the correct device is being used.

To access Device Manager in Windows 7, click Start, select
Control Panel, and then select Device Manager.

To access Device Manager in Windows 8.1, from the Start screen,
type c, select Control Panel from the list of applications, and then
select Device Manager.

Set the operating system to use the correct audio device.

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.

82 Chapter 6 Troubleshooting without diagnostics

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.

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 off 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 refill 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.

A wireless keyboard/mouse is not working correctly. Symptoms include lagging mouse movement, jumpy mouse/keyboard, or no
function of mouse/keyboard and external drive.

Cause Solution

If your computer is equipped with USB 3.0 ports, connected USB

3.0 devices can interfere with the wireless keyboard USB receiver.

Connect the wireless keyboard USB receiver to a USB 2.0 port that
is separated from ports with USB 3.0 devices. If you still
experience interference, you may have to place the connectors
farther apart using an external USB hub.

Solving keyboard and mouse problems 83

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 to the back of

the computer, 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.

Cursor will not move using the arrow keys on the keypad.

Cause Solution

The Num Lock key is on. Press the Num Lock key. The Num Lock light should be off if you

want to use the arrow keys on the keypad. You can disable or
enable the Num Lock key in Computer Setup at Advanced >

Device Options.

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 cleaning. Remove the roller ball cover on the mouse and clean the internal

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 8.1:

1. Press the Windows logo + l to open the Settings charm.

2. Use the arrow keys to select Power, 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.

components.

84 Chapter 6 Troubleshooting without diagnostics

Mouse does not respond to movement or is too slow.

Cause Solution

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.

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.

Mouse will only move vertically, horizontally, or movement is jerky.

Cause Solution

Mouse roller ball or the rotating encoder shafts that make
contact with the ball are dirty.

Remove roller ball cover from the bottom of the mouse and clean
the internal components with a mouse cleaning kit available from
most computer stores.

Solving Hardware Installation Problems

You may need to reconfigure 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
configures the computer. If you install a non-plug and play device, you must reconfigure 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.

Table 6-1 Solving Hardware Installation Problems

A new device is not recognized as part of the system.

Cause Solution

Device is not seated or connected properly. Ensure that the device is properly and securely connected and

that pins in the connector are not bent down.

Cable(s) of new external device are loose or power cables are
unplugged.

Power switch of new external device is not turned on. Turn off the computer, turn on the external device, then turn on

When the system advised you of changes to the configuration,
you did not accept them.

A plug and play board may not automatically configure when
added if the default configuration conflicts with other devices.

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 configuration that does not
cause a resource conflict. You can also use Computer Setup to
reconfigure or disable devices to resolve the resource conflict.

Solving Hardware Installation Problems 85

Table 6-1 Solving Hardware Installation Problems (continued)

A new device is not recognized as part of the system.

Cause Solution

To access Device Manager in Windows 7, click Start, select
Control Panel, and then select Device Manager.

To access Device Manager in Windows 8.1, from the Start screen,
type c, select Control Panel from the list of applications, and then
select Device Manager.

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

Wrong memory modules were used in the upgrade or memory
modules were installed in the wrong location.

Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. (Beeps
stop after fifth iteration but LEDs continue flashing.)

is selected for appropriate USB ports under Security > USB
Security.

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 DIMM2, and DIMM3 must be
installed before DIMM4.

2. Observe the beeps and LED lights on the front of the

computer. Beeps and flashing LEDs are codes for specific
problems.

3. If you still cannot resolve the issue, contact Customer

Support.

Cause Solution

Memory is installed incorrectly or is bad. CAUTION: To avoid damage to the DIMMs or the system board,

86 Chapter 6 Troubleshooting without diagnostics

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 DIMM2, and DIMM3 must be
installed before DIMM4

3. Replace third-party memory with HP memory.

4. Replace the system board.

Power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six times. (Beeps
stop after fifth iteration but LEDs continue flashing.)

Cause Solution

Graphics card (some models) is not seated properly or is bad, or
system board is bad.

Power LED flashes Red ten times, once every second, followed by a two second pause, and the computer beeps ten times. (Beeps
stop after fifth iteration but LEDs continue flashing.)

Cause Solution

Bad option card. 1. Check each option card by removing the cards one at time (if

Solving Network Problems

For systems with a graphics card:

1. Reseat the graphics card. Power on the system.

2. Replace the graphics card.

3. Replace the system board.

For systems with integrated graphics, replace the system board.

multiple cards), then power on the system to see if fault
goes away.

2. Once bad card is identified, remove and replace bad option

card.

3. Replace the system board.

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.

Table 6-2 Solving Network Problems

Wake-on-LAN feature is not functioning.

Cause Solution

S5 Maximum Power Saving feature is enabled. Disable the S5 Maximum Power Saving option in Computer Setup.

S5 Wake on LAN is disabled (some models). Enable the S5 Wake on LAN option in Computer Setup. Select

Wake-on-LAN is not enabled. To enable Wake-on-LAN in Windows 7:

Select Power > Hardware Power Management > S5 Maximum

Power Savings.

Advanced > Device Options > S5 Wake on LAN.

1. Select Start > Control Panel > Network and Sharing Center.

2. Under Tasks, select Manage network connections.

3. Click Local Area Connection.

4. Click the Properties button.

5. Click the Configure button.

6. Click the Power Management tab, then select Allow this

device to wake the computer.

To enable Wake-on-LAN in Windows 8.1:

Solving Network Problems 87

Table 6-2 Solving Network Problems (continued)

Wake-on-LAN feature is not functioning.

Cause Solution

1. From the Start screen, type c, and then select Control Panel

from the list of applications.

2. Select Network and Sharing Center, and then click the

Ethernet link next to the connection.

3. Click the Properties button.

4. Click the Configure button.

5. Click the Power Management tab, then enable the

appropriate Wake-on LAN option.

Network driver does not detect network controller.

Cause Solution

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 8.1, from the Start
screen, type c, select Control Panel from the list of
applications, and then select Device Manager.

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 flashes.

NOTE: The network status light is supposed to flash 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

Network controller is disabled. 1. Run Computer Setup and enable network controller.

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 8.1, from the Start screen,
type c, select Control Panel from the list of applications, and then
select Device Manager.

2. Enable the network controller in the operating system using

Device Manager.

88 Chapter 6 Troubleshooting without diagnostics

Table 6-2 Solving Network Problems (continued)

Network status link light never flashes.

NOTE: The network status light is supposed to flash when there is network activity.

Cause Solution

To access Device Manager in Windows 7, click Start, select
Control Panel, and then select Device Manager.

To access Device Manager in Windows 8.1, from the Start
screen, type c, select Control Panel from the list of
applications, and then select Device Manager.

Network driver is not properly loaded. Reinstall network drivers.

System cannot autosense the network. Disable auto-sensing capabilities and force the system into the

Diagnostics reports a failure.

Cause Solution

The cable is not securely connected. Ensure that the cable is securely attached to the network

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.

Network controller interrupt is shared with an expansion board. Under the Computer Setup Advanced menu, change the resource

The network controller is defective. Contact an authorized service provider.

Diagnostics passes, but the computer does not communicate with the network.

Cause Solution

correct operating mode.

connector and that the other end of the cable is securely attached
to the correct device.

Ensure that the cable and device at the other end are operating
correctly.

settings for the board.

Network drivers are not loaded, or driver parameters do not
match current configuration.

The network controller is not configured for this computer. Select the Network and Sharing Center icon in the Control Panel

Make sure the network drivers are loaded and that the driver
parameters match the configuration of the network controller.

Make sure the correct network client and protocol is installed.

and configure the network controller.

To access Control Panel in Windows 7, click Start, and then select
Control Panel.

To access Control Panel in Windows 8.1, from the Start screen,
type c, and then select Control Panel.

Solving Network Problems 89

Network controller stopped working when an expansion board was added to the computer.

Cause Solution

Network controller interrupt is shared with an expansion board. Under the Computer Setup Advanced menu, change the resource

settings for the board.

The network controller requires drivers. Verify that the drivers were not accidentally deleted when the

drivers for a new expansion board were installed.

The expansion board installed is a network card (NIC) and
conflicts with the embedded NIC.

Network controller stops working without apparent cause.

Cause Solution

The files containing the network drivers are corrupted. Reinstall the network drivers using the Recovery Disc Set in

The cable is not securely connected. Ensure that the cable is securely attached to the network

The network controller is defective. Contact an authorized service provider.

New network card will not boot.

Cause Solution

New network card may be defective or may not meet industry­standard specifications.

Under the Computer Setup Advanced menu, change the resource
settings for the board.

Windows 7 or Windows recovery tools in Windows 8.1.

If necessary, download the softpaq from the web (from a
different computer).

connector and that the other end of the cable is securely attached
to the correct device.

Install a working, industry-standard NIC, or change the boot
sequence to boot from another source.

Cannot connect to network server when attempting Remote System Installation.

Cause Solution

The network controller is not configured properly. Verify Network Connectivity, that a DHCP Server is present, and

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.

90 Chapter 6 Troubleshooting without diagnostics

that the Remote System Installation Server contains the NIC
drivers for your NIC.

CAUTION: Power may still be supplied to the DIMMs when the computer is turned off (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 affected by configurations 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 firmware for Out-of-Band (OOB), third-party data storage, and
other management functions.

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

Integrated graphics may use system memory. No action required.

Insufficient 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.

and 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

Delete any TSRs that you do not need.

memory to the computer.

Solving memory problems 91

Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. (Beeps
stop after fifth iteration but LEDs continue flashing.)

Cause Solution

Memory is installed incorrectly or is bad. 1. Reseat DIMMs. Power on the system.

Solving CD-ROM and DVD problems

If you encounter CD-ROM or DVD problems, see the common causes and solutions listed in the following
table or to the documentation that came with the optional device.

System will not boot from CD-ROM or DVD drive.

Cause Solution

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.

The device is attached to a SATA port that has been hidden in the
Computer Setup utility.

Removable Media Boot is disabled in the Computer Setup utility. Run the Computer Setup utility and enable booting to removable

Network Boot is enabled in Computer Setup. Run the Computer Setup utility and disable Network Boot in

Non-bootable CD in drive. Try a bootable CD in the drive.

Boot order not correct. Run the Computer Setup utility and change boot sequence in

Drive not found (identified).

Cause Solution

Cable could be loose. Check cable connections.

The system may not have automatically recognized a newly
installed device.

Run the Computer Setup utility and ensure Device Available is
selected for the device's SATA port in Security > Device Security.

media in Storage > Storage Options. Ensure CD-ROM is enabled
in Storage > Boot Order.

Security > Network Boot.

Storage > Boot Order.

See reconfiguration directions in the

Installation Problems on page 85 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 > Power-On
Options.

Solving Hardware

The device is attached to a SATA port that has been hidden in
Computer Setup.

Drive responds slowly immediately after power-up. Run Computer Setup and increase the POST Delay in Advanced >

92 Chapter 6 Troubleshooting without diagnostics

Run the Computer Setup utility and ensure Device Available is
selected for the device's SATA port in Security > Device Security.

Power-On Options.