HP Chromebook c640 Service manual

Maintenance and Service Guide

SUMMARY

This guide provides information about spare parts, removal and replacement of parts, security, backing up, and more.

© Copyright 2020 HP Development Company,
L.P.

Bluetooth is a trademark owned by its
proprietor and used by HP Inc. under license.
Chrome, Chrome OS, Chromebook, Chromecast,
Google, and Google Drive are trademarks of
Google LLC. Intel, Core, and Pentium are
trademarks of Intel Corporation or its
subsidiaries in the U.S. and/or other countries.
SDHC, SDXC, and microSD are trademarks or
registered trademarks of SD-3C LLC. Microsoft
and Windows are either registered trademarks
or trademarks of Microsoft Corporation in the
United States and/or other countries. USB
Type-C® is a registered trademark of USB
Implementers Forum.

The information contained herein is subject to
change without notice. The only warranties for
HP products and services are set forth in the
express warranty statements accompanying
such products and services. Nothing herein
should be construed as constituting an
additional warranty. HP shall not be liable for
technical or editorial errors or omissions
contained herein.

First Edition: June 2020

Product notice

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

To access the latest user guides, go to

http://www.hp.com/support, and follow the

instructions to nd your product. Then select

Manuals.

Software terms

By installing, copying, downloading, or
otherwise using any software product
preinstalled on this computer, you agree to be
bound by the terms of the HP End User License
Agreement (EULA). If you do not accept these
license terms, your sole remedy is to return the
entire unused product (hardware and software)
within 14 days for a full refund subject to the
refund policy of your seller.

For any further information or to request a full
refund of the price of the computer, please
contact your seller.

Document Part Number: L93860-001

Safety warning notice

Reduce the possibility of heat-related injuries or of overheating the computer by following the practices
described.

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

the computer directly on your lap or obstruct the computer air vents. Use the computer only on a hard, at
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 airow. Also, do not allow the AC adapter to come into contact with the
skin or a soft surface, such as pillows or rugs or clothing, during operation. The computer and the AC adapter
comply with the user-accessible surface temperature limits dened by applicable safety standards.

iii

iv Safety warning notice

Table of contents

1 Product description ....................................................................................................................................... 1

2 Components .................................................................................................................................................. 5

Right side ............................................................................................................................................................... 5

Left side ................................................................................................................................................................. 6

Display .................................................................................................................................................................... 7

Keyboard area ........................................................................................................................................................ 8

Touchpad ............................................................................................................................................. 8

Button, speakers and ngerprint reader ............................................................................................ 9

Special keys ....................................................................................................................................... 10

Bottom ................................................................................................................................................................. 10

Labels ................................................................................................................................................................... 11

3 Illustrated parts catalog .............................................................................................................................. 13

Computer major components .............................................................................................................................. 13

Display assembly subcomponents ...................................................................................................................... 15

Cables ................................................................................................................................................................... 16

Miscellaneous parts ............................................................................................................................................. 16

4 Removal and replacement procedures preliminary requirements .................................................................... 19

Tools required ...................................................................................................................................................... 19

Service considerations ......................................................................................................................................... 19

Plastic parts ....................................................................................................................................... 19

Cables and connectors ...................................................................................................................... 19

Drive handling ................................................................................................................................... 19

Workstation guidelines ..................................................................................................................... 20

Electrostatic discharge information .................................................................................................................... 20

Generating static electricity .............................................................................................................. 21

Preventing electrostatic damage to equipment ............................................................................... 21

Personal grounding methods and equipment .................................................................................. 22

Grounding the work area ................................................................................................................... 22

Recommended materials and equipment ........................................................................................ 22

Packaging and transporting guidelines .............................................................................................................. 23

5 Removal and replacement procedures for authorized service provider parts .................................................... 25

Component replacement procedures .................................................................................................................. 25

v

Preparation for disassembly ............................................................................................................. 25

Bottom cover ..................................................................................................................................... 25

Battery ............................................................................................................................................... 26

Speakers ............................................................................................................................................ 28

Touchpad ........................................................................................................................................... 29

Fingerprint sensor board .................................................................................................................. 31

Fan ..................................................................................................................................................... 32

Heat sink ............................................................................................................................................ 33

USB board .......................................................................................................................................... 35

USB door ............................................................................................................................................ 35

System board .................................................................................................................................... 38

Display assembly ............................................................................................................................... 40

Keyboard with top cover ................................................................................................................... 48

6 Backing up, resetting, and recovering ........................................................................................................... 51

Backing up ............................................................................................................................................................ 51

Resetting .............................................................................................................................................................. 51

Recovering ........................................................................................................................................................... 51

Installing the Chromebook Recovery Utility ..................................................................................... 51

Creating recovery media ................................................................................................................... 52

Recovering the Chrome operating system ....................................................................................... 52

Setting up your computer after a reset or recovery ........................................................................................... 52

Erase and reformat the recovery media .............................................................................................................. 52

7 Specications .............................................................................................................................................. 53

Computer specications ...................................................................................................................................... 53

35.6 cm (14.0 in) display specications .............................................................................................................. 53

8 Statement of memory volatility .................................................................................................................... 55

Current BIOS steps ............................................................................................................................................... 55

Nonvolatile memory usage ................................................................................................................................. 57

Questions and answers ....................................................................................................................................... 59

Using HP Sure Start (select products only) ......................................................................................................... 60

9 Power cord set requirements ........................................................................................................................ 61

Requirements for all countries ............................................................................................................................ 61

Requirements for specic countries and regions ................................................................................................ 61

10 Recycling .................................................................................................................................................. 63

vi

Index ............................................................................................................................................................. 65

vii

viii

1 Product description

This table provides detailed product information.

Table 1-1 Product components and their descriptions

Category Description

Product Name HP Pro c640 Chromebook

Processors 10th Generation Intel® Core™ processors

Intel Core i7-10610U (1.8 GHz [turbo up to 4.9 GHz], 4 cores, 8 MB L3 cache, 15 W)

Intel Core i7-10510U (1.8 GHz [turbo up to 4.9 GHz], 4 cores, 8 MB L3 cache, 15 W)

Intel Core i5-10310U (1.7 GHz [turbo up to 4.4 GHz], 4 cores, 6 MB L3 cache, 15 W)

Intel Core i5-10210U (1.6 GHz [turbo up to 4.2 GHz], 4 cores, 6 MB L3 cache, 15 W)

Intel Core i3-10110U (2.1 GHz [turbo up to 4.1 GHz], 2 cores, 4 MB L3 cache, 15 W)

Intel Pentium® Gold 6405U (2.4 GHz, 2 cores, 2 MB L3 cache, 15 W)

Graphics Internal graphics

Intel UHD Graphics

Supports HD Decode, DX12, and HDMI

Display 35.6 cm (14.0 in), WLED, antiglare, eDP, slim (3.0 mm), narrow bezel, nontouch

Full high denition (FHD) (1920 × 1080), UWVA, 220 nits

High denition (HD) (1366 × 768), SVA, 250 nits

35.6 cm (14.0 in), slim (3.0 mm), narrow bezel, touch screen

FHD, antiglare, UWVA, 250 nits

HD, antiglare, SVA, 220 nits

HD, BrightView, SVA, 220 nits

Memory Soldered on board, nonupgradeable

DDR4-2666 dual-channel support

Supports the following congurations:

● 16 GB

● 8 GB

Primary storage On-board embedded MultiMedia Controller (eMMC v5.0) congurations

128 GB

64 GB

32 GB

Audio and video HD audio

1

Table 1-1 Product components and their descriptions (continued)

Category Description

B&O Play

Dual stereo speakers

HD Camera: HD WFOV + dual microphones

1280 × 720 by 30 frames per second

Dual-array digital microphone with appropriate software: beam forming, echo cancellation, noise
suppression

Camera privacy cover

Wireless Integrated wireless options with dual antennas (M.2/PCIe)

Intel Wi-Fi 6 AX201 + Bluetooth® 5 (non-vPro) (802.11ax 2 × 2, MU-MIMO, supporting gigabit le transfer
speeds)

Supports HP Connection Optimizer with Wi-Fi load balancing

Support for Chromecast™

Supports turbo-lite antenna design (extended range wireless LAN)

Wi-Fi BIOS SAR

Media card reader Supports microSD™, SDHC™, SDXC™ up to UHS-104

Push-push insertion/removal

Ports Hot plug/unplug and autodetect for correct output to wide-aspect vs. standard aspect video

HDMI v1.4b supporting: up to 1920 × 1080 @ 60 Hz via USB Type-C®

Audio-out (headphone)/audio-in (microphone) combo jack

(2) USB 3.1 Gen 1 Type C (right and left side; support charging, power delivery, video, and data)

(2) USB 3.1 Gen 1 Type A (right and left side)

Keyboard/pointing
devices

Power requirements Battery

Google Keyboard

Full size, textured, island style, spill resistant, backlit

Full size, textured, island style, spill resistant, not backlit

Full size, 3-coat paint, island style, backlit, ngerprint sensor

Full size, 3-coat paint, island style, not backlit, ngerprint sensor

Touchpad requirements

Multitouch gestures enabled

Taps enabled as default

3 cell, 60 Whr, polymer, HP Long Life

2 Chapter 1 Product description

AC adapter, USB Type-C

65 W, nPFC, straight

45 W, nPFC, straight

Table 1-1 Product components and their descriptions (continued)

Category Description

Power cord

C5, 1 m

Security Nano security lock slot

Fingerprint sensor (select products only)

H1 Secure Microcontroller

Operating system Google® Chrome™ 64

Serviceability End user replaceable parts

AC adapter

3

4 Chapter 1 Product description

2 Components

Your computer features top-rated components. This chapter provides details about your components, where
they are located, and how they work.

Right side

Use the illustration and table to identify the components on the right side of the computer.

Table 2-1 Right-side components and their descriptions

Component Description

(1) Memory card reader Reads optional memory cards that enable you to store, manage,

share, or access information.

To insert a card:

1. Hold the card label-side up, with connectors facing the

computer.

2. Insert the card into the memory card reader, and then

press in on the card until it is rmly seated.

To remove a card:

▲ Press in on the card, and then remove it from the memory

card reader.

(2) Audio-out (headphone)/Audio-in (microphone)

combo jack

(3) AC adapter and battery light ● White: The AC adapter is connected and the battery is fully

Connects optional powered stereo speakers, headphones,
earbuds, a headset, or a television audio cable. Also connects an
optional headset microphone. This jack does not support
optional standalone microphones.

WARNING! To reduce the risk of personal injury, adjust the

volume before putting on headphones, earbuds, or a headset.
For additional safety information, see the Regulatory, Safety,
and Environmental Notices.

NOTE: When a device is connected to the jack, the computer

speakers are disabled.

charged.

● Amber: The AC adapter is connected and the battery is

charging.

5

Table 2-1 Right-side components and their descriptions (continued)

Component Description

● Blinking amber: The battery has an error.

● O: The battery is not charging.

(4) USB Type-C power connector and SuperSpeed

(5) USB SuperSpeed port Connects a USB device, such as a cell phone, camera, activity

Left side

Use the illustration and table to identify the components on the left side of the computer.

Plus port

Connects an AC adapter that has a USB Type-C connector,
supplying power to the computer and, if needed, charging the
computer battery.

- and -

Connects a USB device, provides high-speed data transfer, and
(for select products) charges small devices when the computer
is on or in Sleep mode.

NOTE: Cables, adapters, or both (purchased separately) might

be required.

tracker, or smartwatch, and provides high-speed data transfer.

Table

2-2 Left-side components and their descriptions

Component Description

(1) USB SuperSpeed port Connects a USB device, such as a cell phone, camera, activity

(2) HDMI port Connects an optional video or audio device, such as a high-

(3) USB Type-C power connector and SuperSpeed

6 Chapter 2 Components

Plus port

tracker, or smartwatch, and provides high-speed data transfer.

denition television, any compatible digital or audio component,
or a high-speed High Denition Multimedia Interface (HDMI)
device.

Connects an AC adapter that has a USB Type-C connector,
supplying power to the computer and, if needed, charging the
computer battery.

- and -

Connects a USB device, provides high-speed data transfer, and
(for select products) charges small devices when the computer
is on or in Sleep mode.

NOTE: Cables, adapters, or both (purchased separately) might

be required.

Table 2-2 Left-side components and their descriptions (continued)

Component Description

Display

The computer display can include essential components such as antennas, cameras, and microphones.

(4) AC adapter and battery light ● White: The AC adapter is connected and the battery is fully

charged.

● Amber: The AC adapter is connected and the battery is

charging.

● Blinking amber: The battery has an error.

● O: The battery is not charging.

(5) Security cable slot Attaches an optional security cable to the computer.

NOTE: The security cable is designed to act as a deterrent, but

it might not prevent the computer from being mishandled or
stolen.

Table 2-3 Display components and their descriptions

Component Description

(1) WLAN antennas* Send and receive wireless signals to communicate with wireless local

area networks (WLANs).

(2) WWAN antennas* Send and receive wireless signals to communicate with wireless wide

area networks (WWANs).

(3) Internal microphones Record sound.

(4) Camera light(s) On: One or more cameras are in use.

Display 7

Table 2-3 Display components and their descriptions (continued)

Component Description

(5) Camera(s) Allows(s) you to video chat, record video, and record still images.

(6) Camera privacy cover By default, the camera lens is uncovered, but you can slide the

*The antennas are not visible from the outside of the computer. For optimal transmission, keep the areas immediately around the
antennas free from obstructions.

For wireless regulatory notices, see the section of the Regulatory, Safety, and Environmental Notices that applies to your country or
region.

Keyboard area

Keyboards can vary by language.

NOTE: Camera functions vary depending on the camera hardware

and software installed on your product.

camera privacy cover to block the camera's view. To use the camera,
slide the camera privacy cover in the opposite direction to reveal the
lens.

NOTE: If you have both front-facing and rear-facing cameras, when

one camera lens is revealed and ready to use, the other is concealed.

Touchpad

Identify the touchpad component.

Table

2-4 Touchpad component and description

Component Description

Touchpad zone Reads your nger gestures to move the pointer or activate items on the

8 Chapter 2 Components

screen.

Button, speakers and ngerprint reader

Identify the button, speakers, and ngerprint reader.

Table 2-5 Button, speakers, and ngerprint reader and their descriptions

Component Description

(1) Speakers Produce sound.

(2) Vent Enables airow to cool internal components.

NOTE: The computer fan starts up automatically to cool

internal components and prevent overheating. It is normal for
the internal fan to cycle on and o during routine operation.

(3) Power button ● When the computer is o, press the button briey to

turn on the computer.

● When the computer is on, press the button briey to

initiate Sleep.

● When the computer is in the Sleep state, press the

button briey to exit Sleep (select products only).

● When the computer is in Hibernation, press the button

briey to exit Hibernation.

IMPORTANT: Pressing and holding down the power button

results in the loss of unsaved information.

If the computer has stopped responding and shutdown
procedures are ineective, press and hold the power button
for at least 4 seconds to turn o the computer.

(4) Fingerprint reader (select products only) Allows a ngerprint logon instead of a password logon.

▲ Swipe down across the ngerprint reader for details.

Keyboard area 9

Table 2-5 Button, speakers, and ngerprint reader and their descriptions (continued)

Component Description

Special keys

Identify the special keys.

IMPORTANT: To prevent ngerprint logon issues, be sure

that when you register your ngerprint that all sides of your
nger are registered by the ngerprint reader.

Table 2-6 Special keys and their descriptions

Component Description

(1) esc key Activates certain computer functions when pressed in

(2) Action keys Execute frequently used system functions.

(3) Power button ● When the computer is o, press the button briey to turn

Bottom

combination with other keys, such as tab or shift.

on the computer.

● When the computer is on, press the button briey to

initiate Sleep.

● When the computer is in the Sleep state, press the button

briey to exit Sleep (select products only).

● When the computer is in Hibernation, press the button

briey to exit Hibernation.

IMPORTANT: Pressing and holding down the power button

results in the loss of unsaved information.

If the computer has stopped responding and shutdown
procedures are ineective, press and hold the power button for
at least 4 seconds to turn o the computer.

Identify the bottom component.

10 Chapter 2 Components

Labels

Table 2-7 Bottom component and description

Component Description

Vent Enables airow airow to cool internal components.

NOTE: The computer fan starts up automatically to cool internal

components and prevent overheating. It is normal for the internal fan to
cycle on and o during routine operation.

The labels axed to the computer provide information you may need when you troubleshoot system
problems or travel internationally with the computer. Labels may be in paper form or imprinted on the
product.

IMPORTANT: Check the following locations for the labels described in this section: the bottom of the

computer, inside the battery bay, under the service door, on the back of the display, or on the bottom of a
tablet kickstand.

● Service label—Provides important information to identify your computer. When contacting support, you

may be asked for the serial number, the product number, or the model number. Locate this information
before you contact support.

Your service label information order may vary by country and might not include the wording "Model" due
to the country regulation.

Labels 11

Table 2-8 Service label components

Component

(1) HP product name

(2) Product ID

(3) Serial number

(4) Warranty period

● Regulatory label(s)—Provide(s) regulatory information about the computer.

● Wireless certication label(s)—Provide(s) information about optional wireless devices and the approval

markings for the countries or regions in which the devices have been approved for use.

12 Chapter 2 Components

3 Illustrated parts catalog

Use this table to determine the spare parts that are available for the computer.

Computer major components

To identify the computer major components, use this illustration and table.

NOTE: HP continually improves and changes product parts. For complete and current information about

supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then
follow the on-screen instructions.

NOTE: Details about your computer, including model, serial number, product key, and length of warranty,

are on the service tag at the bottom of your computer.

Computer major components 13

Table 3-1 Computer major component descriptions and part numbers

Item Component Spare part number

(1) Display assembly

NOTE: Display assemblies are spared only at the subcomponent level.

(2) Top cover with keyboard

3-coat paint, backlit, with ngerprint sensor M03451-xx1

3-coat paint, backlit, without ngerprint sensor M03452-xx1

Textured, not backlit, without ngerprint sensor M03453-xx1

Textured, not backlit, with ngerprint sensor M03454-xx1

(3) Touchpad (includes rubber)

NOTE: The touchpad cable is available in the Cable Kit as spare part number M00703-001.

(4) Fingerprint sensor board (includes cable) M00438-001

(5) Battery (3 cell, 60 Whr) L84398-002

(6) Speaker Kit M00436-001

(7) USB board M00433-001

(8) USB cables (included in Cable Kit) M00703-001

(9) Heat sink M00434-001

(10) Fan M02014-001

(11) System board (includes integrated processor, system memory, and eMMC memory; includes

replacement thermal material)

Intel Core i7-10610U processor, 16 GB of system memory, and 128 GB of eMMC memory (models
with a ngerprint sensor)

Intel Core i7-10610U processor, 16 GB of system memory, and 64 GB of eMMC memory (models
with a ngerprint sensor)

Intel Core i5-10310U processor, 16 GB of system memory, and 128 GB of eMMC memory (models
with a ngerprint sensor)

Intel Core i5-10310U processor, 16 GB of system memory, and 64 GB of eMMC memory (models
with a ngerprint sensor)

M00437-001

M00695-001

M00694-001

M00691-001

M00690-001

Intel Core i5-10310U processor, 8 GB of system memory, and 64 GB of eMMC memory (models with
a ngerprint sensor)

Intel Core i3-10110U processor, 8 GB of system memory, and 64 GB of eMMC memory (models with
a ngerprint sensor)

Intel Pentium 6405U processor, 8 GB of system memory, and 32 GB of eMMC memory (models
without a ngerprint sensor)

Intel Pentium 6405U processor, 8 GB of system memory, and 32 GB of eMMC memory (models with
a ngerprint sensor)

(12) USB door

Left door M00444-001

14 Chapter 3 Illustrated parts catalog

M00687-001

M00685-001

M00696-001

M00698-001

Table 3-1 Computer major component descriptions and part numbers (continued)

Item Component Spare part number

Right door M00445-001

(13) Bottom cover M00432-001

Display assembly subcomponents

To identify the display assembly subcomponents, use this illustration and table.

Table 3-2 Display component descriptions and part numbers

Item Component Spare part number

(1) Display bezel M00701-001

(2) Display panel

FHD, nontouch M00446-001

FHD, touch M00447-001

HD, nontouch M00448-001

HD, touch M00449-001

Display assembly subcomponents 15

Cables

Table 3-2 Display component descriptions and part numbers (continued)

Item Component Spare part number

(3) Top bracket M00700-001

(4) Hinges (left and right) M00440-001

(5) Display cable M00702-001

(6) Wireless antennas M00435-001

(7) Hinge cover M00441-001

(8) Camera cable M12614-001

(9) Camera module M00442-001

(10) Display back cover M00439-001

To identify the cables, use this illustration and table.

Table 3-3 Cable descriptions and part numbers

Item Component Spare part number

Cable Kit, includes: M00703-001

(1) Touchpad cable

(2) USB board cable

(3) USB board cable

Miscellaneous parts

To identify the miscellaneous parts, use this table.

16 Chapter 3 Illustrated parts catalog

Table 3-4 Miscellaneous part descriptions and part numbers

Component Spare part number

AC adapter, USB Type-C (nPFC, 1.8 m)

65 W L67440-001

45 W L43407-001

Screw Kit M00443-001

Bracket Kit (includes touchpad support bracket and ngerprint bracket) M12524-001

Power cord (C5, 1.0 m)

Australia L19358-001

Brazil L19359-001

Denmark L19360-001

Europe (Austria, Belgium, Finland, France, Germany, the Netherlands, Norway, and Sweden) L19361-001

India L19363-001

Israel L19362-001

Italy L19364-001

Japan L19365-001

North America L19367-001

People's Republic of China L19368-001

South Africa L19369-001

South Korea L19366-001

Switzerland L19370-001

Taiwan L19372-001

Thailand L19371-001

The United Kingdom L19373-001

Power cord (C5, 1.8 m)

Australia L19358-002

Brazil L19359-002

Denmark L19360-002

Europe (Austria, Belgium, Finland, France, Germany, the Netherlands, Norway, and Sweden) L19361-002

India L19363-002

Israel L19362-002

Italy L19364-002

Japan L19365-002

North America L19367-002

People's Republic of China L19368-002

Miscellaneous parts 17

Table 3-4 Miscellaneous part descriptions and part numbers (continued)

Component Spare part number

South Africa L19369-002

South Korea L19366-002

Switzerland L19370-002

Taiwan L19372-002

Thailand L19371-002

The United Kingdom L19373-002

18 Chapter 3 Illustrated parts catalog

4 Removal and replacement procedures

preliminary requirements

Use this information to properly prepare to disassemble and reassemble the computer.

Tools required

You need the following tools to complete the removal and replacement procedures:

● Tweezers

● Nonconductive, nonmarking pry tool

● Magnetic Phillips P1 screwdriver

Service considerations

The following sections include some of the considerations that you must keep in mind during disassembly
and assembly procedures.

NOTE: As you remove each subassembly from the computer, place the subassembly (and all accompanying

screws) away from the work area to prevent damage.

Plastic parts

Using excessive force during disassembly and reassembly can damage plastic parts.

Cables and connectors

Handle cables with extreme care to avoid damage.

IMPORTANT: When servicing the computer, be sure that cables are placed in their proper locations during

the reassembly process. Improper cable placement can damage the computer.

Apply only the tension required to unseat or seat the cables during removal and insertion. Handle cables by
the connector whenever possible. In all cases, avoid bending, twisting, or tearing cables. Be sure that cables
are routed so that they cannot be caught or snagged as you remove or replace parts. Handle ex cables with
extreme care; these cables tear easily.

Drive handling

Note the following guidelines when handling drives.

Tools required 19

IMPORTANT: Drives are fragile components. Handle them with care. To prevent damage to the computer,

damage to a drive, or loss of information, observe these precautions:

Before removing or inserting a hard drive, shut down the computer. If you are unsure whether the computer is
o or in Hibernation, turn the computer on, and then shut it down through the operating system.

Before handling a drive, be sure that you are discharged of static electricity. While handling a drive, avoid
touching the connector.

Before removing an optical drive, be sure that a disc is not in the drive, and be sure that the optical drive tray
is closed.

Handle drives on surfaces covered with at least 2.54 cm (1 inch) of shock-proof foam.

Avoid dropping drives from any height onto any surface.

After removing a hard drive or an optical drive, place it in a static-proof bag.

Avoid exposing an internal hard drive to products that have magnetic elds, such as monitors or speakers.

Avoid exposing a drive to temperature extremes or liquids.

If a drive must be mailed, place the drive in a bubble pack mailer or other suitable form of protective
packaging, and label the package “FRAGILE.”

Workstation guidelines

Follow these grounding workstation guidelines:

● Cover the workstation with approved static-shielding material.

● Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and

equipment.

● Use conductive eld service tools, such as cutters, screw drivers, and vacuums.

● When xtures must directly contact dissipative surfaces, use xtures made only of static-safe materials.

● Keep the work area free of nonconductive materials, such as ordinary plastic assembly aids

and polystyrene foam.

● Handle ESD-sensitive components, parts, and assemblies by the case or PCM laminate. Handle these

items only at static-free workstations.

● Avoid contact with pins, leads, or circuitry.

● Turn o power and input signals before inserting or removing connectors or test equipment.

Electrostatic discharge information

A sudden discharge of static electricity from your nger or other conductor can destroy static-sensitive
devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device
exposed to electrostatic discharge (ESD) might not appear to be aected at all and can work perfectly
throughout a normal cycle. The device might 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.

20 Chapter 4 Removal and replacement procedures preliminary requirements

IMPORTANT: To prevent damage to the device when you remove or install internal components, observe

these precautions:

Keep components in their electrostatic-safe containers until you are ready to install them.

Before touching an electronic component, discharge static electricity by using the guidelines described

Personal grounding methods and equipment on page 22.

Avoid touching pins, leads, and circuitry. Handle electronic components as little as possible.

If you remove a component, place it in an electrostatic-safe container.

Generating static electricity

Follow these static electricity guidelines.

● Dierent activities generate dierent amounts of static electricity.

● Static electricity increases as humidity decreases.

Table 4-1 Static electricity occurrence based on activity and humidity

Event 55% 40% 10%

Relative humidity

Walking across carpet

Walking across vinyl oor

Motions of bench worker

Removing DIPs (dual in-line packages) from plastic tube

Removing DIPs from vinyl tray

Removing DIPs from polystyrene foam

Removing bubble pack from PCB (printed circuit board)

Packing PCBs in foam-lined box

Multiple electric components can be packaged together in plastic tubes, trays, or polystyrene foam.

NOTE: As little as 700 V can degrade a product.

Preventing electrostatic damage to equipment

Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of
sensitivity. The following packaging and grounding precautions are necessary to prevent static electricity
damage to electronic components.

● To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes.

7,500 V

3,000 V

400 V

400 V

2,000 V

3,500 V

7,000 V

5,000 V

15,000 V

5,000 V

800 V

700 V

4,000 V

5,000 V

20,000 V

11,000 V

35,000 V

12,000 V

6,000 V

2,000 V

11,500 V

14,500 V

26,500 V

21,000 V

● Protect all electrostatic parts and assemblies with conductive or approved containers or packaging.

● Keep electrostatic-sensitive parts in their containers until they arrive at static-free stations.

● Place items on a grounded surface before removing them from their container.

● Always be properly grounded when touching a sensitive component or assembly.

Electrostatic discharge information 21

● 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

Using certain equipment can prevent static electricity damage to electronic components.

● Wrist straps are exible straps with a maximum of 1 MΩ ±10% resistance in the ground cords. To

provide proper ground, a strap must be worn snug against bare skin. The ground cord must be
connected and t snugly into the banana plug connector on the grounding mat or workstation.

● Heel straps/Toe straps/Boot straps can be used at standing workstations and are compatible with

most types of shoes or boots. On conductive oors or dissipative oor mats, use them on both feet with
a maximum of 1 MΩ ±10% resistance between the operator and ground.

Table 4-2 Static shielding protection levels

Static shielding protection levels

Method Voltage

Antistatic plastic

Carbon-loaded plastic

Metallized laminate

Grounding the work area

To prevent static damage at the work area, follow these precautions.

● Cover the work surface with approved static-dissipative material. Provide a wrist strap connected to the

work surface and properly grounded tools and equipment.

● Use static-dissipative mats, foot straps, or air ionizers to give added protection.

● Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate. Handle

them only at static-free work areas.

● Turn o power and input signals before inserting and removing connectors or test equipment.

● Use xtures made of static-safe materials when xtures must directly contact dissipative surfaces.

● Keep work area free of nonconductive materials such as ordinary plastic assembly aids and polystyrene

foam.

● Use eld service tools, such as cutters, screwdrivers, and vacuums, that are conductive.

Recommended materials and equipment

1,500

7,500

15,000

HP recommends certain materials and equipment to prevent static electricity.

● 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 1 MΩ ±10% resistance

22 Chapter 4 Removal and replacement procedures preliminary requirements

● Static-dissipative table or oor mats with hard tie to ground

● Field service kits

● Static awareness labels

● Wrist straps and footwear straps providing 1 MΩ ±10% resistance

● Material handling packages

● Conductive plastic bags

● Conductive plastic tubes

● Conductive tote boxes

● Opaque shielding bags

● Transparent metallized shielding bags

● Transparent shielding tubes

Packaging and transporting guidelines

Follow these grounding guidelines when packaging and transporting equipment.

● To avoid hand contact, transport products in static-safe tubes, bags, or boxes.

● Protect ESD-sensitive parts and assemblies with conductive or approved containers or packaging.

● Keep ESD-sensitive parts in their containers until the parts arrive at static-free workstations.

● Place items on a grounded surface before removing items from their containers.

● Always be properly grounded when touching a component or assembly.

● Store reusable ESD-sensitive parts from assemblies in protective packaging or nonconductive foam.

● Use transporters and conveyors made of antistatic belts and roller bushings. Be sure that mechanized

equipment used for moving materials is wired to ground and that proper materials are selected to avoid
static charging. When grounding is not possible, use an ionizer to dissipate electric charges.

Packaging and transporting guidelines 23

24 Chapter 4 Removal and replacement procedures preliminary requirements

5 Removal and replacement procedures for

authorized service provider parts

This chapter provides removal and replacement procedures for authorized service provider parts.

IMPORTANT: Components described in this chapter should be accessed only by an authorized service

provider. Accessing these parts can damage the computer or void the warranty.

NOTE: Details about your computer, including model, serial number, product key, and length of warranty,

are on the service tag at the bottom of your computer.

Component replacement procedures

To remove and replace computer components, use these procedures.

NOTE: HP continually improves and changes product parts. For complete and current information about

supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then
follow the on-screen instructions.

You must remove, replace, or loosen as many as 50 screws when you service the parts described in this
chapter. Make special note of each screw size and location during removal and replacement.

Preparation for disassembly

To remove and replace computer components, use these procedures.

See Removal and replacement procedures preliminary requirements on page 19 for initial safety procedures.

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

computer on, and then shut it down through the operating system.

2. Disconnect the power from the computer by unplugging the power cord from the computer.

3. Disconnect all external devices from the computer.

Bottom cover

To remove the bottom cover, use this procedure and illustration.

Table

5-1 Bottom cover description and part number

Description Spare part number

Bottom cover M00432-001

Before removing the bottom cover, prepare the computer for disassembly (Preparation for disassembly

on page 25).

Remove the bottom cover:

1. Remove the four Phillips M2.0 × 7.0 screws (1) from the sides and top and the three Phillips M2.0 × 3.5

screws (2) from the bottom that secure the bottom cover to the computer.

25

2. Use a nonmarking, nonconductive tool (1) to release the edges of the bottom cover from the computer

(2).

3. Remove the bottom cover from the computer (3).

To replace the bottom cover, reverse the removal procedures.

Battery

To remove the battery, use this procedure and illustration.

5-2 Battery description and part number

Table

Description Spare part number

Battery (3 cell, 60 Whr) L84398-002

26 Chapter 5 Removal and replacement procedures for authorized service provider parts

WARNING! To avoid personal injury and damage to the product:

● Do not puncture, twist, or crack the battery.

● Do not cause an external puncture or rupture to the battery. They can cause a short inside the battery,

which can result in battery thermal runaway.

● Do not handle or touch the battery enclosure with sharp objects such as tweezers or pliers, which might

puncture the battery.

● Do not compress or squeeze the battery case with tools or heavy objects stacked on top of the case.

These actions can apply undue force on the battery.

● Do not touch the connectors with any metallic surface or object, such as metal tools, screws, or coins,

which can cause shorting across the connectors.

Before removing the battery, follow these steps:

1. Prepare the computer for disassembly (Preparation for disassembly on page 25).

2. Remove the bottom cover (Bottom cover on page 25).

WARNING! To reduce potential safety issues, use only the user-replaceable battery provided with the

computer, a replacement battery provided by HP, or a compatible battery purchased from HP.

IMPORTANT: Removing a battery that is the sole power source for the computer can cause loss of

information. To prevent loss of information, save your work or shut down the computer through Windows
before you remove the battery.

Remove the battery:

1. Disconnect the battery cable from the system board (1).

2. Remove the ve Phillips M2.0 × 3.0 screws (2) that secure the battery to the computer.

Component replacement procedures 27

3. Remove the battery from the computer (3).

To insert the battery, reverse the removal procedures.

Speakers

To remove the speakers, use this procedure and illustration.

Table

Before removing the speakers, follow these steps:

1. Prepare the computer for disassembly (Preparation for disassembly on page 25).

2. Remove the bottom cover (Bottom cover on page 25).

3. Remove the battery (see Battery on page 26).

Remove the speakers:

1. Disconnect the speaker cable from the system board (1).

2. Disconnect the cable from the ZIF connector on the touchpad (2). You need to move this cable so you can

5-3 Speaker description and part number

Description Spare part number

Speaker Kit M00436-001

remove the speaker cable that routes under it.

28 Chapter 5 Removal and replacement procedures for authorized service provider parts

3. Lift the tape that secures the speaker cable to the touchpad (3).

4. Remove the speaker cable from the clips in the computer chassis (4).

5. Remove the two Phillips M2.0 × 5.0 screws (5) that secure the speakers to the computer.

NOTE: When installing the speakers, be sure that the gaskets are correctly installed in the speaker

screw holes (6).

6. Remove the speakers from the computer (7) .

Reverse this procedure to install the speakers.

Touchpad

To remove the touchpad, use this procedure and illustration.

Table

Before removing the touchpad, follow these steps:

1. Prepare the computer for disassembly (Preparation for disassembly on page 25).

2. Remove the bottom cover (Bottom cover on page 25).

3. Remove the battery (see Battery on page 26).

5-4 Touchpad description and part number

Description Spare part number

Touchpad M00437-001

Touchpad cable (included in Cable Kit) M00703-001

Touchpad support bracket (included in Bracket Kit) M12524-001

Component replacement procedures 29

Remove the touchpad:

1. Remove the four Phillips M2.0 × 2.5 screws (1) that secure the touchpad bracket to the computer.

2. Remove the touchpad bracket from the computer (2).

3. Lift the tape that secures the speaker cable to the touchpad (1).

4. Disconnect the cable from the ZIF connector on the touchpad (2).

5. Remove the protective shielding from the top of the touchpad (3).

6. Remove the three Phillips M2.0 × 2.0 screws (4) that secure the touchpad to the computer.

30 Chapter 5 Removal and replacement procedures for authorized service provider parts

7. Remove the touchpad from the computer (5).

Reverse this procedure to install the touchpad.

Fingerprint sensor board

To remove the ngerprint sensor board, use this procedure and illustration.

Table

5-5 Fingerprint sensor board description and part number

Description Spare part number

Fingerprint sensor board M00438-001

Fingerprint sensor bracket (available in the Bracket Kit) M12524-001

Before removing the ngerprint sensor board, follow these steps:

1. Prepare the computer for disassembly (Preparation for disassembly on page 25).

2. Remove the bottom cover (Bottom cover on page 25).

3. Remove the battery (see Battery on page 26).

Remove the ngerprint sensor board:

1. Disconnect the cable from the ZIF connector on the system board (1).

2. Remove the Phillips M2.0 × 2.0 screw (2) that secures the ngerprint sensor bracket, and then remove

the bracket (3).

Component replacement procedures 31

3. Remove the ngerprint sensor board from the computer (4).

Reverse this procedure to install the ngerprint sensor board.

Fan

To remove the fan, use this procedure and illustration.

Table

5-6 Fan description and part number

Description Spare part number

Fan assembly M02014-001

Before removing the fan, follow these steps:

1. Prepare the computer for disassembly (Preparation for disassembly on page 25).

2. Remove the bottom cover (Bottom cover on page 25).

3. Remove the battery (see Battery on page 26).

Remove the fan assembly:

1. Disconnect the fan cable from the system board (1).

32 Chapter 5 Removal and replacement procedures for authorized service provider parts

2. Remove the three Phillips M2.0 × 3.0 screws (2), and then remove the fan (3).

Reverse this procedure to install the fan assembly.

Heat sink

To remove the heat sink, use these procedures and illustrations.

Table

5-7 Heat sink descriptions and part numbers

Description Spare part number

Heat sink M00434-001

Before removing the heat sink, follow these steps:

1. Prepare the computer for disassembly (Preparation for disassembly on page 25).

2. Remove the bottom cover (Bottom cover on page 25).

3. Remove the battery (see Battery on page 26).

Remove the heat sink:

1. In the order indicated on the heat sink, remove the four Phillips M2.0 × 2.0 screws (1), and then remove

the heat sink from the computer (2).

Component replacement procedures 33

2. Thoroughly clean the thermal material from the surfaces of the heat sink and the system board

components each time the heat sink is removed. Replacement thermal material is included with the heat
sink and system board spare part kits. The following illustration shows the replacement thermal
material locations.

Thermal paste is used on one system board component (1) and on the heat sink area (2) that services it.

Reverse this procedure to install the heat sink.

34 Chapter 5 Removal and replacement procedures for authorized service provider parts

USB board

To remove the USB board, use this procedure and illustration.

Table 5-8 USB board description and part number

Description Spare part number

USB board M00433-001

USB board cables (included in Cable Kit) M00703-001

Before removing the USB board, follow these steps:

1. Prepare the computer for disassembly (Preparation for disassembly on page 25).

2. Remove the bottom cover (Bottom cover on page 25).

3. Remove the battery (see Battery on page 26).

Remove the USB board:

1. Disconnect the two cables from the ZIF connectors on the USB board (1).

2. Remove the ve Phillips M2.0 × 3.0 screws (2) that secure the board to the computer.

3. Remove the board from the computer (3).

Reverse this procedure to install the USB board.

USB door

To remove the USB door, use this procedure and illustration.

Component replacement procedures 35

Table 5-9 USB door description and part number

Description Spare part number

USB door, left M00444-001

USB door, right M00445-001

Before removing the USB door, follow these steps:

1. Prepare the computer for disassembly (Preparation for disassembly on page 25).

2. Remove the bottom cover (Bottom cover on page 25).

3. Remove the battery (see Battery on page 26).

Remove the USB door:

1. Insert a removal tool (1) under the USB door (2).

2. Align the posts on the tool with the slots on the underside of the door (3), and then pull the tool away

from the door to release it (4).

36 Chapter 5 Removal and replacement procedures for authorized service provider parts

3. Remove the USB door from the computer (5).

USB doors are available for both sides of the computer.

Reverse this procedure to install the USB door.

Component replacement procedures 37

System board

To remove the system board, use these procedures and illustrations.

Table 5-10 System board descriptions and part numbers

Description Spare part

number

Intel Core i7-10610U processor, 16 GB of system memory, and 128 GB of eMMC memory (models with a ngerprint
sensor)

Intel Core i7-10610U processor, 16 GB of system memory, and 64 GB of eMMC memory (models with a ngerprint
sensor)

Intel Core i5-10310U processor, 16 GB of system memory, and 128 GB of eMMC memory (models with a ngerprint
sensor)

Intel Core i5-10310U processor, 16 GB of system memory, and 64 GB of eMMC memory (models with a ngerprint
sensor)

Intel Core i5-10310U processor, 8 GB of system memory, and 64 GB of eMMC memory (models with a ngerprint
sensor)

Intel Core i3-10110U processor, 8 GB of system memory, and 64 GB of eMMC memory (models with a ngerprint
sensor)

Intel Pentium 6405U processor, 8 GB of system memory, and 32 GB of eMMC memory (models without a ngerprint
sensor)

Intel Pentium 6405U processor, 8 GB of system memory, and 32 GB of eMMC memory (models with a ngerprint
sensor)

Before removing the system board, follow these steps:

1. Prepare the computer for disassembly (Preparation for disassembly on page 25).

2. Remove the bottom cover (Bottom cover on page 25).

M00695-001

M00694-001

M00691-001

M00690-001

M00687-001

M00685-001

M00696-001

M00698-001

3. Remove the battery (see Battery on page 26).

4. Remove the fan (see Fan on page 32).

Remove the system board:

1. Disconnect the following cables from the system board:

● Antenna cables from integrated WLAN module (1)

● Camera cable (2)

● Display cable (3)

● USB board cable (ZIF) from USB board (4)

● USB board cable (ZIF) from USB board (5)

● Keyboard backlight cable (ZIF) (6) (select products only)

● Touchpad cable (ZIF) (7)

● Keyboard cable (ZIF) (8)

38 Chapter 5 Removal and replacement procedures for authorized service provider parts

● Fingerprint reader cable (ZIF) (9)

● Speaker cable (10)

2. Remove the four Phillips M2.0 × 5.0 screws that secure the system board to the computer.

Component replacement procedures 39

3. Lift the right side of the system board (1), and then pull the board up and to the right to remove it (2).

4. If you need to remove the USB cables from the system board, disconect the bottom (1) and top (2)

cables.

Reverse this procedure to install the system board.

Display assembly

To remove and disassemble the display assembly, use these procedures and illustrations.

Before removing the display panel, follow these steps:

1. Prepare the computer for disassembly (Preparation for disassembly on page 25).

2. Remove the bottom cover (Bottom cover on page 25).

40 Chapter 5 Removal and replacement procedures for authorized service provider parts

3. Remove the battery (see Battery on page 26).

4. Remove the heat sink (see Heat sink on page 33).

Remove the display assembly:

1. Disconnect the antennas from the WLAN module (1).

2. Disconnect the camera cable (2).

3. Disconnect the display cable (3).

4. Remove the four Phillips M2.5 × 5.0 screws (1) that secure the display to the computer.

5. Open the computer to open the hinges (2).

Component replacement procedures 41

6. Separate the computer from the display (3).

7. If you need to replace display assembly subcomponents:

a. Remove the three Phillips M2.0 × 3.0 screws (1) that secure the bezel to the display.

b. Slide a at tool (2) under each side of the bezel to remove it (3).

The bezel is available as spare part number M00701-001.

42 Chapter 5 Removal and replacement procedures for authorized service provider parts

8. If you need to remove the hinge cover, squeeze near both ends of the cover (1), and then pull the cover

o the hinges (2).

The hinge cover is available as spare part number M00441-001.

9. If you need to remove the display panel:

a. Lift the bottom of the panel (1).

b. The display panel is secured to the display enclosure with tape that is installed under the left and

right sides of the panel. To remove the panel, use tweezers to grasp the end of the tape (2). While
turning the tweezers, wrap the tape around the tweezers (3) as you continue to pull the tape out
from behind the display panel (4). You must pull the tape multiple times before it is completely
removed.

Component replacement procedures 43

c. Rotate the display panel over and place it next to the display enclosure.

Display panels are available as the following spare part numbers:

M00446-001: FHD, nontouch

M00447-001: FHD, touch

M00448-001: HD, nontouch

M00449-001: HD, touch

d. Disconnect the cable from the panel (1).

e. Remove the panel (2).

44 Chapter 5 Removal and replacement procedures for authorized service provider parts

10. If you need to remove the display cable:

▲ Remove the cable from the right hinge and along the bottom of the display back cover. The display

cable is available as spare part number M00702-001.

11. If you need to remove the camera module and cable:

a. Use a at tool to lift up evenly across the camera module to remove it from the display back cover

(1), and then remove the cable and module assembly (2).

Component replacement procedures 45

b. Lift the latch on the reverse ZIF connector on the camera module (1), and then disconnect the cable

(2). The camera module is available as spare part number M00442-001. The camera cable is

available as spare part number M12614-001.

12. If you need to remove the hinges from the display:

a. Remove the two Phillips broadhead M2.5 × 2.5 screws (1) from each hinge.

b. Remove the hinges from the display (2).

The display hinges are available as spare part number M00440-001.

46 Chapter 5 Removal and replacement procedures for authorized service provider parts

13. If you need to remove the top display bracket from the display:

a. Remove the four Phillips broadhead M2.0 × 2.5 screws (1) from the bracket.

b. Remove the bracket from the display (2).

The bracket is available as spare part number M00700-001.

Component replacement procedures 47

14. If you need to remove the antenna cables, remove the cables from the clips on the inside of the cover

(1), and then peel the antennas o the cover to remove them (2).

Antenna cables are available as spare part number M00435-001.

The display back cover is available as spare part number M00439-001.

Reverse this procedure to reassemble and replace the display assembly.

Keyboard with top cover

The top cover with keyboard remains after removing all other spare parts from the computer. In this section,
the rst table provides the main spare part number for the top cover/keyboards. The second table provides
the country codes.

Table

5-11 Keyboard with top cover descriptions and part numbers

Description Spare part number

Keyboard with top cover, 3-coat paint, backlit, with ngerprint sensor M03451-xx1

Keyboard with top cover, 3-coat paint, backlit, without ngerprint sensor M03452-xx1

Keyboard with top cover, textured, not backlit, without ngerprint sensor M03453-xx1

Keyboard with top cover, textured, not backlit, with ngerprint sensor M03454-xx1

Table 5-12 Spare part country codes

For use in country or
region

Belgium -A41 Iceland -DD1 Solvenia -BA1

Spare part
number

For use in country or
region

Spare part
number

For use in country or
region

Spare part
number

Brazil -201 India -D61 South Korea -AD1

Bulgaria -261 Israel -BB1 Spain -071

Chile -161 Italy -061 Switzerland -BG1

48 Chapter 5 Removal and replacement procedures for authorized service provider parts

Table 5-12 Spare part country codes (continued)

For use in country or
region

Czech Republic/Slovakia -FL1 Japan -291 Taiwan -AB1

Denmark, Finland, and
Norway

French Canada -DB1 Northern Africa -FP1 Turkey -141

France -051 Portugal -131 Ukraine -BD1

Germany -041 Romania -271 United Kingdom -031

Greece -151 Russia -251 United States -001

Hungary -211 Saudi Arabia -171

Spare part
number

-DH1 The Netherlands -B31 Thailand -281

For use in country or
region

Spare part
number

For use in country or
region

Spare part
number

Component replacement procedures 49

50 Chapter 5 Removal and replacement procedures for authorized service provider parts

6 Backing up, resetting, and recovering

This chapter provides information about processes that are standard procedure for most products.

Backing up

You can back up your data to an optional USB ash drive or SD memory card or through Google Drive.

For detailed information about creating a backup, go to http://www.support.google.com.

Resetting

A factory reset erases all the information on your computer hard drive, including all the les in the Downloads
folder. Before you reset, be sure to back up your les to an optional USB ash drive, SD memory card, or
through Google Drive. The factory reset will not delete any of your les on Google Drive or an external storage
device.

Recovering

When your Chrome OS™ operating system is not working properly, you can perform a recovery. A recovery
reinstalls the operating system and software programs and restores the original factory settings. Locally
saved les and saved networks are deleted for all accounts. Your Google Accounts and any data synced to
your Google Drive™ storage are not aected by a system recovery.

NOTE: For more information about performing a system recovery on your computer, go to

http://www.support.google.com

Before beginning the recovery process, you need the following:

● A USB ash drive or SD memory card with a capacity of 4 GB or greater. All data is erased from this

storage device when the recovery media is created, so back up any les from the device before you
begin.

● A computer with internet access. You must also have administrative rights to the computer.

● Computer AC adapter. The computer must be plugged into AC power during recovery.

● The “Chrome OS is missing or damaged” screen displaying on your computer. If this message is not

already displayed:

– Turn on the computer, press and hold the esc + f3 keys, and then press the power button. The

computer restarts, and the screen shows the “Chrome OS is missing or damaged” screen.

Installing the Chromebook Recovery Utility

The Chromebook™ Recovery Utility is an app used to recover the original operating system and software
programs that were installed at the factory. This utility can be installed from the Chrome Web Store on any
computer.

51

Creating recovery media

Recovery media is used to recover the original operating system and software programs that were installed at
the factory.

Recovering the Chrome operating system

To recover the Chrome operating system on your computer using the recovery media you created:

Setting up your computer after a reset or recovery

After a reset or recovery is complete, perform the initial setup process.

For details on setting up the computer, go to http://www.support.google.com.

Erase and reformat the recovery media

During the process of creating recovery media, the USB ash drive or SD memory card is formatted for use as
a recovery tool. After you recover your computer, you will need to erase the recovery media if you want to
reuse your USB ash drive or SD memory card to store other les. Use the steps in this section to erase the
recovery media using the Chromebook Recovery Utility.

52 Chapter 6 Backing up, resetting, and recovering

7 Specications

This chapter provides specications for your computer.

Computer specications

This section provides specications for your computer. When traveling with your computer, the computer
dimensions and weights, as well as input power ratings and operating specications, provide helpful
information.

Table 7-1 Computer specications

Dimensions

Width 323.6 mm 12.8 in

Depth 221 mm 8.07 in

Height 16.5 mm 0.65 in

Weight 1.52 kg 3.35 lb

Input power

Metric U.S.

Operating voltage and current 19.5 V dc @ 3.33 A – 65 W

19.5 V dc @ 2.31 A – 45 W

Temperature

Operating 5°C to 35°C 41°F to 95°F

Nonoperating –20°C to 60°C –4°F to 140°F

Relative humidity (noncondensing)

Operating 10% to 90%

Nonoperating 5% to 95%

Maximum altitude (unpressurized)

Operating –15 m to 3,048 m –50 ft to 10,000 ft

Nonoperating –15 m to 12,192 m –50 ft to 40,000 ft

NOTE: Applicable product safety standards specify thermal limits for plastic surfaces. The device operates well within this range of

temperatures.

35.6 cm (14.0 in) display specications

This section provides specications for your display.

Computer specications 53

Table 7-2 Display specications

Metric U.S.

Active diagonal size 35.6 cm 14.0 in

Resolution 1920 × 1080 (FHD)

1368 × 766 (HD)

Surface treatment Antiglare (FHD panels)

Brightview (FHD, HD panels)

Brightness 250 nits (FHD panels)

220 nits (HD panels)

Viewing angle UWVA (FHD panels)

SVA (HD panels)

Backlight WLED

Display panel interface eDP

54 Chapter 7 Specications

8 Statement of memory volatility

For general information regarding nonvolatile memory in HP Business computers, and to restore nonvolatile
memory that can contain personal data after the system has been turned o and the hard drive has been
removed, use these instructions.

HP Business computer products that use Intel®-based or AMD®-based system boards contain volatile DDR
memory. The amount of nonvolatile memory present in the system depends upon the system
Intel-based and AMD-based system boards contain nonvolatile memory subcomponents as originally shipped
from HP, with the following assumptions:

● No subsequent modications were made to the system.

● No applications, features, or functionality were added to or installed on the system.

Following system shutdown and removal of all power sources from an HP Business computer system,
personal data can remain on volatile system memory (DIMMs) for a nite period of time and also remains in
nonvolatile memory. Use the following steps to remove personal data from the computer, including the
nonvolatile memory found in Intel-based and AMD-based system boards.

NOTE: If your tablet has a keyboard base, connect to the keyboard base before beginning steps in this

chapter.

conguration.

Current BIOS steps

Use these instructions to restore nonvolatile memory.

1. Follow these steps to restore the nonvolatile memory that can contain personal data. Restoring or

reprogramming nonvolatile memory that does not store personal data is neither necessary nor
recommended.

a. Turn on or restart the computer, and then quickly press esc.

NOTE: If the system has a BIOS administrator password, enter the password at the prompt.

b. Select Main, select Apply Factory Defaults and Exit, and then select Yes to load defaults. The

computer restarts.

c. During the restart, press esc while the "Press the ESC key for Startup Menu" message is displayed

at the bottom of the screen.

NOTE: If the system has a BIOS administrator password, enter the password at the prompt.

d. Select the Security menu, select Restore Security Settings to Factory Defaults, and then select

Yes to restore security level defaults. The computer reboots.

e. During the reboot, press esc while the "Press the ESC key for Startup Menu" message is displayed

at the bottom of the screen.

NOTE: If the system has a BIOS administrator password, enter the password at the prompt.

f. If an asset or ownership tag is set, select the Security menu and scroll down to the Utilities menu.

Select System IDs, and then select Asset Tracking Number. Clear the tag, and then make the
selection to return to the prior menu.

55

g. If a DriveLock password is set, select the Security menu, and scroll down to Hard Drive Utilities

under the Utilities menu. Select Hard Drive Utilities, select DriveLock, and then clear the check
box for DriveLock password on restart. Select OK to proceed.

h. Select the Main menu, and then select Reset BIOS Security to factory default. Click Yes at the

warning message. The computer reboots.

i. During the reboot, press esc while the "Press the ESC key for Startup Menu" message is displayed

at the bottom of the screen.

NOTE: If the system has a BIOS administrator password, enter the password at the prompt.

j. Select the Main menu, select Apply Factory Defaults and Exit, select Yes to save changes and exit,

and then select Shutdown.

k. Reboot the system. If the system has a Trusted Platform Module (TPM), ngerprint reader, or both,

one or two prompts will appear—one to clear the TPM and the other to Reset Fingerprint Sensor.
Press or tap f1 to accept or f2 to reject.

l. Remove all power and system batteries for at least 24 hours.

2. Complete one of the following:

● Remove and retain the storage drive.

– or –

● Clear the drive contents by using a third-party utility designed to erase data from an SSD.

– or –

● Clear the contents of the drive by using the following BIOS Setup Secure Erase command option

steps:

If you clear data using Secure Erase, you cannot recover it.

a. Turn on or restart the computer, and then quickly press esc.

b. Select the Security menu and scroll down to the esc menu.

c. Select Hard Drive Utilities.

d. Under Utilities, select Secure Erase, select the hard drive storing the data you want to clear, and

then follow the on-screen instructions to continue.

– or –

Clear the contents of the drive using the following Disk Sanitizer commands steps:

i. Turn on or restart the computer, and then quickly press esc.

ii. Select the Security menu and scroll down to the Utilities menu.

iii. Select Hard Drive Utilities.

iv. Under Utilities, select Disk Sanitizer, select the hard drive with the data that you want to

clear, and then follow the on-screen instructions to continue.

NOTE: The amount of time it takes for Disk Sanitizer to run can take several hours. Plug the computer

into an AC outlet before starting.

56 Chapter 8 Statement of memory volatility

Nonvolatile memory usage

Use this table to troubleshooting nonvolatile memory usage.

Table 8-1 Troubleshooting steps for nonvolatile memory usage

Nonvolatile
memory type Amount (Size)

HP Sure Start ash
(select models
only)

Real Time Clock
(RTC) battery
backed-up CMOS
conguration
memory

8 MB No Yes Provides

256 bytes No Yes Stores system

Does this
memory
store
customer
data?

Does this
memory
retain data
when power
is removed?

What is the
purpose of this
memory?

protected
backup of
critical System
BIOS code, EC
rmware, and
critical
computer
conguration
data for select
platforms that
support HP
Sure Start.

For more
information,
see Using HP

Sure Start
(select products
only)
on page 60.

date and time
and noncritical
data.

How is data entered into this
memory?

Data cannot be written to this
device via the host processor.
The content is managed
solely by the HP Sure Start
Embedded Controller.

RTC battery backed-up CMOS
is programmed using
Computer Setup (BIOS), or by
changing the Windows date &
time.

How is this memory
write-protected?

This memory is protected
by the HP Sure Start
Embedded Controller.

This memory is not write­protected.

Controller (NIC)
EEPROM

DIMM Serial
Presence Detect
(SPD)
conguration data

System BIOS 9 MB Yes Yes Stores system

64 KB (not
customer
accessible)

256 bytes per
memory
module, 128
bytes
programmable
(not customer
accessible)

No Yes Stores NIC

conguration
and NIC

rmware.

No Yes Stores memory

module
information.

BIOS code and
computer
conguration
data.

NIC EEPROM is programmed
using a utility from the NIC
vendor that can be run from
DOS.

DIMM SPD is programmed by
the memory vendor.

System BIOS code is
programmed at the factory.
Code is updated when the
system BIOS is updated.
Conguration data and
settings are entered using
the Computer Setup (BIOS) or
a custom utility.

Nonvolatile memory usage 57

A utility must be used to
write data to this memory
and is available from the
NIC vendor. Writing data
to this ROM in an
inappropriate manner will
render the NIC non­functional.

Data cannot be written to
this memory when the
module is installed in a
computer. The specic
write-protection method
varies by memory vendor.

NOTE: Writing data to

this ROM in an
inappropriate manner can
render the computer non­functional.

A utility must be used for
writing data to this
memory and is available

Table 8-1 Troubleshooting steps for nonvolatile memory usage (continued)

Nonvolatile
memory type Amount (Size)

Intel Management
Engine Firmware
(present only in
select Elite or Z
models. For more
information, go to

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

Identify your
product for
manuals and
specic product
information, and

then follow the
on-screen
instructions.)

1.5 MB or 7 MB Yes Yes Stores

Does this
memory
store
customer
data?

Does this
memory
retain data
when power
is removed?

What is the
purpose of this
memory?

Management
Engine Code,
Settings,
Provisioning
Data and iAMT
third-party data
store.

How is data entered into this
memory?

Management Engine Code is
programmed at the factory.
Code is updated via Intel
secure rmware update
utility. Unique Provisioning
Data can be entered at the
factory or by an
administrator using the
Management Engine (MEBx)
setup utility. The third-party
data store contents can be
populated by a remote
management console or local
applications that have been
registered by an
administrator to have access
to the space.

How is this memory
write-protected?

on the HP website; go to

http://www.hp.com/
support. Select Find your

product, and then follow
the on-screen
instructions.

The Intel chipset is
congured to enforce
hardware protection to
block all direct read-write
access to this area. An
Intel utility must be used
for updating the
rmware. Only rmware
updates digitally signed
by Intel can be applied
using this utility.

Bluetooth ash
(select products
only)

802.11 WLAN
EEPROM

Camera (select
products only)

Fingerprint reader
(select products
only)

2 megabits No Yes Stores

Bluetooth
conguration
and rmware.

4 kilobits to 8
kilobits

64 kilobits No Yes Stores camera

512 KB ash Yes Yes Stores

No Yes Stores

conguration
and calibration
data.

conguration
and rmware.

ngerprint
templates.

Bluetooth ash is
programmed at the factory.
Tools for writing data to this
memory are not publicly
available but can be obtained
from the silicon vendor.

802.11 WLAN EEPROM is
programmed at the factory.
Tools for writing data to this
memory are not made public.

Camera memory is
programmed using a utility
from the device
manufacturer that can be run
from Windows.

Fingerprint reader memory is
programmed by user
enrollment in HP
ProtectTools Security
Manager.

A utility must be used for
writing data to this
memory and is made
available through newer
versions of the driver
whenever the ash
requires an upgrade.

A utility must be used for
writing data to this
memory and is typically
not made available to the
public unless a rmware
upgrade is necessary to
address a unique issue.

A utility must be used for
writing data to this
memory and is typically
not made available to the
public unless a rmware
upgrade is necessary to
address a unique issue.

Only a digitally signed
application can make the
call to write to the ash.

58 Chapter 8 Statement of memory volatility

Questions and answers

Use this section to answer your questions about nonvolatile memory.

1. How can the BIOS settings be restored (returned to factory settings)?

IMPORTANT: The restore defaults feature does not securely erase any data on your hard drive. See

question and answer 6 for steps to securely erase data.

The restore defaults feature does not reset the Custom Secure Boot keys. See question and answer 7 for
information about resetting the keys.

a. Turn on or restart the computer, and then quickly press esc.

b. Select Main, and then select Apply Factory Defaults and Exit.

c. Follow the on-screen instructions.

d. Select Main, select Save Changes and Exit, and then follow the on-screen instructions.

2. What is a UEFI BIOS, and how is it dierent from a legacy BIOS?

The Unied Extensible Firmware Interface (UEFI) BIOS is an industry-standard software interface
between the platform rmware and an operating system (OS). It replaces the older BIOS architecture but
supports much of the legacy BIOS functionality.

Like the legacy BIOS, the UEFI BIOS provides an interface to display the system information and
conguration settings and to change the conguration of your computer before an OS is loaded. BIOS
provides a secure runtime environment that supports a Graphic User Interface (GUI). In this environment,
you can use either a pointing device (touch screen, touchpad, pointing stick, or USB mouse) or the
keyboard to navigate and make menu and conguration selections. The UEFI BIOS also contains basic
system diagnostics.

The UEFI BIOS provides functionality beyond that of the legacy BIOS. In addition, the UEFI BIOS works to
initialize the computer’s hardware before loading and executing the OS; the runtime environment allows
the loading and execution of software programs from storage devices to provide more functionality,
such as advanced hardware diagnostics (with the ability to display more detailed system information)
and advanced rmware management and recovery software.

HP has provided options in Computer Setup (BIOS) to allow you to run in legacy BIOS, if required by the
operating system. Examples of this requirement would be if you upgrade or downgrade the OS.

3. Where is the UEFI BIOS located?

The UEFI BIOS is located on a ash memory chip. You must use a utility to write to the chip.

4. What kind of conguration data is stored on the DIMM Serial Presence Detect (SPD) memory

module? How would this data be written?

The DIMM SPD memory contains information about the memory module, such as size, serial number,
data width, speed and timing, voltage, and thermal information. This information is written by the
module manufacturer and stored on an EEPROM. You cannot write to this EEPROM when the memory
module is installed in a computer. Third-party tools do exist that can write to the EEPROM when the
memory module is not installed in a computer. Various third-party tools are available to read SPD
memory.

5. What is meant by “Restore the nonvolatile memory found in Intel-based system boards”?

This message relates to clearing the Real Time Clock (RTC) CMOS memory that contains computer
conguration data.

6. How can the BIOS security be reset to factory defaults and erase the data?

Questions and answers 59

IMPORTANT: Resetting results in the loss of information.

These steps do not reset Custom Secure Boot Keys. See question and answer 7 for information about
resetting the keys.

a. Turn on or restart the computer, and then quickly press esc.

b. Select Main, and then select Reset Security to Factory Defaults.

c. Follow the on-screen instructions.

d. Select Main, select Save Changes and Exit, and then follow the on-screen instructions.

7. How can the Custom Secure Boot Keys be reset?

Secure Boot is a feature to ensure that only authenticated code can start on a platform. If you enabled
Secure Boot and created Custom Secure Boot Keys, disabling Secure Boot does not clear the keys. You
must also select to clear the Custom Secure Boot Keys. Use the same Secure Boot access procedure that
you used to create the Custom Secure Boot Keys, but select to clear or delete all Secure Boot Keys.

a. Turn on or restart the computer, and then quickly press esc.

b. Select the Security menu, select Secure Boot Conguration, and then follow the on-screen

instructions.

c. At the Secure Boot Conguration window, select Secure Boot, select Clear Secure Boot Keys, and

then follow the on-screen instructions to continue.

Using HP Sure Start (select products only)

Select computer models are congured with HP Sure Start, a technology that continuously monitors your
computer's BIOS for attacks or corruption.

If the BIOS becomes corrupted or is attacked, HP Sure Start restores the BIOS to its previously safe state,
without user intervention. Those select computer models ship with HP Sure Start congured and enabled. HP
Sure Start is congured and already enabled so that most users can use the HP Sure Start default
conguration. Advanced users can customize the default conguration.

To access the latest documentation on HP Sure Start, go to http://www.hp.com/support.

60 Chapter 8 Statement of memory volatility

9 Power cord set requirements

This chapter provides power cord requirements for countries and regions.

The wide-range input feature of the computer permits it to operate from any line voltage from 100 V ac to
120 V ac, or from 220 V ac to 240 V ac.

The 3-conductor power cord set included with the computer meets the requirements for use in the country or
region where the equipment is purchased.

Power cord sets for use in other countries or regions must meet the requirements of the country and region
where the computer is used.

Requirements for all countries

These power cord requirements are applicable to all countries and regions.

● The length of the power cord set must be at least 1.0 m (3.3 ft) and no more than 2.0 m (6.5 ft).

● All power cord sets must be approved by an acceptable accredited agency responsible for evaluation in

the country or region where the power cord set will be used.

● The power cord sets must have a minimum current capacity of 10 A and a nominal voltage rating of 125

V ac or 250 V ac, as required by the power system of each country or region.

● The appliance coupler must meet the mechanical conguration of an EN 60 320/IEC 320 Standard Sheet

C13 connector for mating with the appliance inlet on the back of the computer.

Requirements for specic countries and regions

To determine power cord requirements for specic countries and regions, use this table.

Table

9-1 Power cord requirements for specic countries and regions

Country/region Accredited agency Applicable note number

Argentina IRAM 1

Australia SAA 1

Austria OVE 1

Belgium CEBEC 1

Brazil ABNT 1

Canada CSA 2

Chile IMQ 1

Denmark DEMKO 1

Finland FIMKO 1

France UTE 1

Germany VDE 1

61

Table 9-1 Power cord requirements for specic countries and regions (continued)

Country/region Accredited agency Applicable note number

India BIS 1

Israel SII 1

Italy IMQ 1

Japan JIS 3

The Netherlands KEMA 1

New Zealand SANZ 1

Norway NEMKO 1

The People's Republic of China CCC 4

Saudi Arabia SASO 7

Singapore PSB 1

South Africa SABS 1

South Korea KTL 5

Sweden SEMKO 1

Switzerland SEV 1

Taiwan BSMI 6

Thailand TISI 1

The United Kingdom ASTA 1

The United States UL 2

1. The exible cord must be Type HO5VV-F, 3-conductor, 0.75 mm² conductor size. Power cord set ttings (appliance coupler and

wall plug) must bear the certication mark of the agency responsible for evaluation in the country or region where it will be used.

2. The exible cord must be Type SVT/SJT or equivalent, No. 18 AWG, 3-conductor. The wall plug must be a two-pole grounding type

with a NEMA 5-15P (15 A, 125 V ac) or NEMA 6-15P (15 A, 250 V ac) conguration. CSA or C-UL mark. UL le number must be on
each element.

3. The appliance coupler, exible cord, and wall plug must bear a T mark and registration number in accordance with the Japanese

Dentori Law. The exible cord must be Type VCTF, 3-conductor, 0.75 mm² or 1.25 mm² conductor size. The wall plug must be a
two-pole grounding type with a Japanese Industrial Standard C8303 (7 A, 125 V ac) conguration.

4. The exible cord must be Type RVV, 3-conductor, 0.75 mm² conductor size. Power cord set ttings (appliance coupler and wall

plug) must bear the CCC certication mark.

5. The exible cord must be Type H05VV-F 3-conductor, 0.75 mm² conductor size. KTL logo and individual approval number must

be on each element. Approval number and logo must be printed on a ag label.

6. The exible cord must be Type HVCTF 3-conductor, 1.25 mm² conductor size. Power cord set ttings (appliance coupler, cable,

and wall plug) must bear the BSMI certication mark.

7. For 127 V ac, the exible cord must be Type SVT or SJT 3-conductor, 18 AWG, with plug NEMA 5-15P (15 A, 125 V ac), with UL and

CSA or C-UL marks. For 240 V ac, the exible cord must be Type H05VV-F 3-conductor, 0.75 mm² or 1.00 mm² conductor size,
with plug BS 1363/A with BSI or ASTA marks.

62 Chapter 9 Power cord set requirements

10 Recycling

When a nonrechargeable or rechargeable battery has reached the end of its useful life, do not dispose of the
battery in general household waste. Follow the local laws and regulations in your area for battery disposal.

HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable
batteries. For more information about recycling programs, see the HP website at http://www.hp.com/recycle.

63

64 Chapter 10 Recycling

Index

A

AC adapter and battery light,

identifying

lights

AC adapter and battery 7
AC adapters, spare part numbers 16
Audio-out (headphone)/Audio-in

(microphone) combo jack 5

B

battery

illustrated 13

spare part number 13
Bluetooth label 11
bottom components 10
bottom cover

illustrated 13

removal 25

spare part number 13, 25

C

cables

spare part numbers 16
camera

identifying 8
camera light, identifying 7
camera module

illustrated 15

spare part number 15
cautions

electrostatic discharge 19, 20
components

bottom 10

display 7

keyboard area 8

left side 6

right side 5
computer major components 13
computer specications 53
creating recovery media 52

D

display

specications 53

display assembly

subcomponents 15

display back cover

illustrated 15
spare part number 15

display bezel

illustrated 15
spare part number 15

display cable

illustrated 15

spare part number 15
display components 7
display panel

illustrated 15

spare part number 15

E

electrostatic discharge (ESD) 19, 20

preventing damage 19, 20, 21
erase and reformat recovery media

removal 52
esc key, identifying

keys

esc 10

F

factory reset 51
fan

illustrated 13

removal 32

spare part number 13, 32
ngerprint sensor board

removal 31

spare part numbers 31
frecovering Chrome operating

system 52

G

grounding methods 19, 20, 22
guidelines

packaging 19, 23

transporting 19, 23

workstation 19, 20

H

hard drive

specications 53

heat sink

illustrated 13
removal 33
spare part number 13
spare part numbers 33

hinge

illustrated 15
spare part number 15

hinge cover

illustrated 15
spare part number 15

HP Sure Start 55, 60

I

illustrated parts catalog 13
install

Chromebook Recovery Utility 51
Recovery Utility 51

internal microphones, identifying 7

J

jacks

audio-out (headphone)/audio-in

(microphone) combo,
identifying 5

K

keyboard

product description 2

keyboard with top cover

spare part numbers 48

keys

action 10

L

labels

Bluetooth 11
regulatory 11
serial number 11
service 11
wireless certication 11
WLAN 11

Index 65

left side components 6
lights

camera 7

M

memory

nonvolatile 55
volatile 55

memory card reader 5

N

nonvolatile memory 55

P

packaging guidelines 19, 23
pointing device, product

description 2

ports

product description 2
USB 6
USB Type-C 6

power connector

identifying 5

power cord

requirements for all countries

61

requirements for specic

countries and regions 61

set requirements 61

power cords, spare part numbers

16

product description

keyboard 2
pointing device 2
ports 2

product name and number,

computer 11

R

recovering 51
Recovery Utility 51
regulatory information

regulatory label 11
wireless certication labels 11

removal and replacement

procedures 25

removing personal data from volatile

system memory 55
resetting 51
right side components 5

S

Screw Kit, spare part number 16
serial number, computer 11
service labels, locating 11
setting up computer after reset or

recovery 52

slots

memory card reader 5
spare part country codes 48
speaker

illustrated 13

removal 28

spare part number 13

spare part numbers 28
special keys, using 10

specications

computer 53

display 53

hard drive 53
static electricity 19, 20, 21
system board

illustrated 13

removal 38

spare part number 13

spare part numbers 38
system memory, removing personal

data from volatile 55

T

top cover/keyboard

illustrated 13

spare part number 13
touchpad

illustrated 13

removal 29

spare part number 13

spare part numbers 29
touchpad cable

spare part number 16
transporting guidelines 19, 23
traveling with the computer 11

U

USB board

illustrated 13

removal 35

spare part number 13

spare part numbers 35
USB board cable

spare part number 16

USB door

removal 35
spare part numbers 35

USB ports

identifying 6

USB Type-C port

identifying 6

W

wireless antennas

illustrated 15

spare part number 15
wireless antennas, identifying 7
wireless certication label 11
WLAN antennas, identifying 7
WLAN device 11
WLAN label 11
workstation guidelines 19, 20

66 Index