HP EliteBook 840 G9 Manual
Maintenance and Service Guide
SUMMARY
This guide provides information about spare parts, removal and replacement of parts, security, backing up, and more.
Legal information
© Copyright 2022 HP Development Company,
L.P.
AMD is a trademark of Advanced Micro Devices,
Inc. Bluetooth is a trademark owned by
its proprietor and used by HP Inc. under
license. Chrome and Google are trademarks
of Google LLC. Intel, Core, Thunderbolt, and
vPro are trademarks of Intel Corporation
or its subsidiaries in the U.S. and/or other
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DisplayPort™ and the DisplayPort™ logo are
trademarks owned by the Video Electronics
Standards Association (VESA®) in the United
States and other countries. Wi-Fi is a registered
trademark of the Wi-Fi Alliance®.
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: May 2022
Document Part Number: N09567-001
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 in all
editions or versions of Windows. Systems
may require upgraded and/or separately
purchased hardware, drivers, software or
BIOS update to take full advantage of
Windows functionality. Windows is automatically
updated, which is always enabled. High-speed
internet and Microsoft account required. ISP
fees may apply and additional requirements
may apply over time for updates. See
http://www.microsoft.com. If your product ships
with Windows in S Mode: Windows in S Mode
works exclusively with apps from the Microsoft
Store within Windows. Certain default settings,
features, and apps cannot be changed. Some
accessories and apps that are compatible
with Windows may not work (including some
antivirus, PDF writers, driver utilities, and
accessibility apps), and performance may vary,
even if you switch out of S Mode. If you switch
to Windows, you cannot switch back to S Mode.
Learn more at Windows.com/SmodeFAQ.
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.
Table of contents
1Product description ....................................................................................................................................................................................1
2Components ................................................................................................................................................................................................6
Locating hardware .................................................................................................................................................................................6
Locating software ..................................................................................................................................................................................6
Right .........................................................................................................................................................................................................6
Left ...........................................................................................................................................................................................................7
Display .....................................................................................................................................................................................................8
Low blue light mode (select products only)..............................................................................................................................8
Keyboard area...................................................................................................................................................................................... 10
Touchpad ..................................................................................................................................................................................... 10
Touchpad settings............................................................................................................................................................. 10
Adjusting touchpad settings................................................................................................................................... 10
Turning on the touchpad......................................................................................................................................... 10
Touchpad components..................................................................................................................................................... 10
Lights ........................................................................................................................................................................................... 11
Button and ngerprint reader .................................................................................................................................................. 12
Special keys................................................................................................................................................................................. 14
Bottom.................................................................................................................................................................................................. 15
Rear ...................................................................................................................................................................................................... 16
Labels.................................................................................................................................................................................................... 16
3Illustrated parts catalog.......................................................................................................................................................................... 18
Computer major components........................................................................................................................................................... 18
Display assembly subcomponents .................................................................................................................................................. 26
Mass storage devices.......................................................................................................................................................................... 28
Cables.................................................................................................................................................................................................... 29
Miscellaneous parts............................................................................................................................................................................ 29
4Removal andreplacement procedures preliminary requirements.................................................................................................. 36
Tools required...................................................................................................................................................................................... 36
Service considerations ....................................................................................................................................................................... 36
Plastic parts ................................................................................................................................................................................ 36
Cables and connectors .............................................................................................................................................................. 36
iii
Drive handling............................................................................................................................................................................. 37
Electrostatic discharge information ................................................................................................................................................. 37
Generating static electricity...................................................................................................................................................... 37
Preventing electrostatic damage to equipment ................................................................................................................... 38
Personal grounding methods and equipment ...................................................................................................................... 38
Grounding the work area .......................................................................................................................................................... 39
Recommended materials and equipment ............................................................................................................................. 39
Cleaning your computer..................................................................................................................................................................... 40
Enabling HP Easy Clean (select products only) ..................................................................................................................... 40
Removing dirt and debris from your computer..................................................................................................................... 40
Cleaning your computer with a disinfectant .......................................................................................................................... 41
Caring for wood veneer (select products only) ..................................................................................................................... 42
Packaging and transporting guidelines........................................................................................................................................... 42
Accessing support information......................................................................................................................................................... 42
5Removal and replacement procedures for authorized service provider parts .............................................................................. 45
Component replacement procedures.............................................................................................................................................. 45
Preparation for disassembly .................................................................................................................................................... 45
Bottom cover .............................................................................................................................................................................. 45
Battery ......................................................................................................................................................................................... 47
WWAN module............................................................................................................................................................................ 48
WLAN module............................................................................................................................................................................. 50
Speakers ...................................................................................................................................................................................... 51
Memory modules....................................................................................................................................................................... 52
Solid-state drive......................................................................................................................................................................... 54
Audio jack .................................................................................................................................................................................... 56
Connector board cable .............................................................................................................................................................. 57
Connector board......................................................................................................................................................................... 58
Fan................................................................................................................................................................................................ 59
Display assembly ....................................................................................................................................................................... 60
System board.............................................................................................................................................................................. 72
Heat sink...................................................................................................................................................................................... 76
Fingerprint reader ...................................................................................................................................................................... 77
Fingerprint reader cable............................................................................................................................................................ 79
RTC battery.................................................................................................................................................................................. 79
NFC module cable ...................................................................................................................................................................... 80
NFC module................................................................................................................................................................................. 81
Touchpad cable........................................................................................................................................................................... 82
Touchpad ..................................................................................................................................................................................... 83
Card reader cable ....................................................................................................................................................................... 84
Card reader.................................................................................................................................................................................. 85
Keyboard with top cover ........................................................................................................................................................... 86
6Using Setup Utility (BIOS)........................................................................................................................................................................ 88
Starting Setup Utility (BIOS)............................................................................................................................................................... 88
Updating Setup Utility (BIOS)............................................................................................................................................................. 88
Determining the BIOS version.................................................................................................................................................. 88
Preparing for a BIOS update..................................................................................................................................................... 89
iv
Downloading a BIOS update............................................................................................................................................ 89
Installing a BIOS update................................................................................................................................................... 90
7Computer Setup (BIOS), TPM, and HP Sure Start................................................................................................................................ 91
Using Computer Setup ....................................................................................................................................................................... 91
Navigating and selecting in Computer Setup ....................................................................................................................... 91
Restoring factory settings in Computer Setup...................................................................................................................... 92
Updating the BIOS...................................................................................................................................................................... 92
Determining the BIOS version......................................................................................................................................... 92
Preparing for a BIOS update............................................................................................................................................ 92
Downloading a BIOS update................................................................................................................................... 93
Installing a BIOS update.......................................................................................................................................... 93
Changing the boot order using the f9 prompt ..................................................................................................................... 93
TPM BIOS settings (select products only) ....................................................................................................................................... 94
Using HP Sure Start (select products only) ..................................................................................................................................... 94
8Backing up, restoring, and recovering .................................................................................................................................................. 95
Backing up information and creating recovery media .................................................................................................................. 95
Using Windows tools for backing up....................................................................................................................................... 95
Using the HP Cloud Recovery Download Tool to create recovery media (select products only) ................................... 95
Restoring and recovering your system............................................................................................................................................ 96
Creating a system restore ........................................................................................................................................................ 96
Restoring and recovery methods ............................................................................................................................................ 96
Recovering using HP Recovery media .................................................................................................................................... 96
Changing the computer boot order......................................................................................................................................... 97
Using HP Sure Recover (select products only)....................................................................................................................... 97
9Using HP PC Hardware Diagnostics....................................................................................................................................................... 98
Using HP PC Hardware Diagnostics Windows (select products only) ......................................................................................... 98
Using an HP PC Hardware Diagnostics Windows hardware failure ID code...................................................................... 98
Accessing HP PC Hardware Diagnostics Windows................................................................................................................ 98
Accessing HP PC Hardware Diagnostics Windows from HP Help and Support (select products only)................ 98
Accessing HP PC Hardware Diagnostics Windows from Support Assistant............................................................. 99
Accessing HP PC Hardware Diagnostics Windows from the Start menu (select products only) .......................... 99
Downloading HP PC Hardware Diagnostics Windows.......................................................................................................... 99
Downloading the latest HP PC Hardware Diagnostics Windows version from HP ................................................. 99
Downloading the HP PC Hardware Diagnostics Windows from the Microsoft Store ...........................................100
Downloading HP Hardware Diagnostics Windows by product name or number (select products only) ..........100
Installing HP PC Hardware Diagnostics Windows ...............................................................................................................100
Using HP PC Hardware Diagnostics UEFI.......................................................................................................................................100
Using an HP PC Hardware Diagnostics UEFI hardware failure ID code ............................................................................100
Starting HP PC Hardware Diagnostics UEFI..........................................................................................................................101
Downloading HP PC Hardware Diagnostics UEFI to a USB ash drive.............................................................................101
Downloading the latest HP PC Hardware Diagnostics UEFI version .......................................................................101
Downloading HP PC Hardware Diagnostics UEFI by product name or number (select products only).............102
Using Remote HP PC Hardware Diagnostics UEFI settings (select products only) .................................................................102
Downloading Remote HP PC Hardware Diagnostics UEFI .................................................................................................102
Downloading the latest Remote HP PC Hardware Diagnostics UEFI version ........................................................102
v
Downloading Remote HP PC Hardware Diagnostics UEFI by product name or number .....................................102
Customizing Remote HP PC Hardware Diagnostics UEFI settings ...................................................................................102
10Specications .......................................................................................................................................................................................104
Computer specications...................................................................................................................................................................104
35.6 cm (14.0 in) display specications ........................................................................................................................................105
Solid-state drive specications.......................................................................................................................................................105
Solid-state drive specications (SATA-3).......................................................................................................................................106
11Statement of memory volatility........................................................................................................................................................107
Current BIOS steps............................................................................................................................................................................107
Nonvolatile memory usage .............................................................................................................................................................109
Questions and answers....................................................................................................................................................................111
Using HP Sure Start (select products only) ...................................................................................................................................113
12Power cord set requirements............................................................................................................................................................114
Requirements for all countries .......................................................................................................................................................114
Requirements for specic countries and regions.........................................................................................................................114
13Recycling...............................................................................................................................................................................................117
Index.............................................................................................................................................................................................................118
vi
Product description1
This table provides detailed product information.
Table 1-1 Product components and their descriptions
Category Description
Product Name HP EliteBook 840 14 inch G9 Notebook PC
Processors Intel™ Core® i7-1280P 1.8 GHz (turbo up to 4.8 GHz) processor (14 cores, 24 MB Intel Smart Cache, 28 W)
Intel Core i7-1270P 1.6 GHz (turbo up to 4.8 GHz) processor (12 cores, 18 MB Intel Smart Cache, 28 W)
Intel Core i7-1265U 1.8 GHz (turbo up to 4.8 GHz) processor (10 cores, 12 MB Intel Smart Cache, 15 W)
Intel Core i7-1260U 2.2 GHz (turbo up to 4.7 GHz) processor (12 cores, 18 MB Intel Smart Cache, 28 W)
Intel Core i7-1255U 1.7 GHz (turbo up to 4.7 GHz) processor (10 cores, 12 MB Intel Smart Cache, 15 W)
Intel Core i5-1250P 1.7 GHz (turbo up to 4.4 GHz) processor (12 cores, 18 MB Intel Smart Cache, 28 W)
Intel Core i5-1245U 1.6 GHz (turbo up to 4.4 GHz) processor (10 cores, 12 MB Intel Smart Cache, 15 W)
Intel Core i5-1240P 1.7 GHz (turbo up to 4.4 GHz) processor (12 cores, 12 MB Intel Smart Cache, 28 W)
Intel Core i5-1235U 1.3 GHz (turbo up to 4.4 GHz) processor (10 cores, 12 MB Intel Smart Cache, 15 W)
Chipset Intel integrated solder-on-circuit (SoC)
Display 35.6 cm (14.0 in), liquid crystal display (LCD) widescreen ultra extended graphics array (WUXGA, 1920 × 1200),
antiglare, ultrawide viewing angle (UWVA), bent display panel
White light-emitting diode + low blue light (WLED + LBL), 100% sRGB, embedded DisplayPort™ + panel self
refresh (eDP + PSR), LP, ambient light sensor + adaptive color sensor (ALS + ACS), SureView Reect, non-touch
on panel (TOP) display panel with 5 MP infrared time-of-ight (ToF) camera; typical brightness: 1000 nits
WLED + LBL, 100% sRGB, eDP 1.3 + PSR, NB2Y, non-TOP display panel with 5 MP infrared ToF camera and
generation 4+ privacy lter; typical brightness: 1000 nits
WLED + LBL, 100% sRGB, eDP + PSR, LP, advanced light source + ACS (ALS + ACS), non-TOP display panel with 5
MP infrared ToF camera; typical brightness: 400 nits
Light-emitting diode (LED), 45% CG, eDP 1.2 with PSR, LP, NB2X, TOP display panel with 5 MP infrared ToF
camera; typical brightness: 250 nits
LED, 45% CG, eDP 1.2 with PSR, LP, NB2X, non-TOP display panel with 5 MP infrared ToF camera; typical
brightness: 250 nits
LED, 45% CG, eDP 1.2 with PSR, LP, NB2X, TOP display panel with 5 MP infrared ToF camera; typical brightness:
250 nits
LED, 45% CG, eDP 1.2 with PSR, LP, NB2X, non-TOP display panel with 5 MP infrared ToF camera; typical
brightness: 250 nits
Product description 1
Table 1-1 Product components and their descriptions (continued)
Category Description
Memory Two customer-accessible memory module slots (small outline dual in-line memory modules (SODIMMs)
supporting up to 64 GB of RAM in the following congurations:
●64 GB (32 × 2)
●48 GB (32 + 16)
●32 GB (32 × 1)
●32 GB (16 × 2)
●24 GB (16 + 8)
●16 GB (16 × 1)
●16 GB (8 × 2)
●8 GB (8 × 1)
Double data rate (DDR5)-4800, Non Error-Correcting Code (NECC) support
eMMC On-board embedded MultiMedia Controller (eMMC v5.0) 32 GB
Primary storage On-board embedded MultiMedia Controller (eMMC v5.0)
Support for the following congurations:
●2 TB, 2280, Peripheral Component Interconnect Express (PCIe)-4×4, Non-Volatile Memory Express (NVMe)
solid-state drive with three-layer cell (TLC)
●1 TB, 2280, PCIe-4×4, NVMe solid-state drive with TLC
●512 GB, PCIe-4×4, NVMe solid-state drive with TLC
●512 GB, 2280, PCIe-4×4, NVMe, value solid-state drive
●512 GB, 2280, PCIe-4×4, NVMe, self-encrypted (SED), OPAL2 solid-state drive with TLC
●256 GB, PCIe-4×4, NVMe, Secure Seal (SS) solid-state drive with TLC
●256 GB, 2280, PCIe-4×4, NVMe, value solid-state drive
●256 GB, 2280, PCIe-4×4, NVMe, SED, OPAL2, solid-state drive with TLC
720p by 30 frames per second
Dual-array digital microphone with appropriate software: beam forming, echo cancellation, noise suppression
HP Wide Vision HD Camera: 5 MP, indicator LED, USB 2.0, HD, Time-of-Flight (ToF), near eld-of-view (NFOV),
xed, infrared (IR), integrated camera
Audio andvideo Audio brand: BANG and OLUFSEN
Support for dual speakers
HP Wide Vision HD Camera: 5 MP, indicator LED, USB 2.0, HD, Time-of-Flight (ToF), near eld-of-view (NFOV),
xed, infrared (IR), integrated camera
720p by 30 frames per second
Dual-array digital microphone with appropriate software: beam forming, echo cancellation, noise suppression
2 Chapter 1Product description
Table 1-1 Product components and their descriptions (continued)
Category Description
Wireless Wireless Local Area Network (WLAN) module
Intel AX211 Wi-Fi® 6e + Bluetooth® 5.2 M.2 2230 160 MHz CNVi worldwide (WW) WLAN module
Intel AX211 Wi-Fi 6E + Bluetooth 5.2 M.2 2230 vPro® 160 MHz CNVi WW WLAN module
Near eld communication (NFC) Mirage WNC XRAV-1
Wireless Wide Area Network (WWAN) module
Intel 5000 5G WWAN module
Intel XMM 7560 R+ long-term evolution (LTE)-Advanced Pro (Cat 16) WWAN module
WWAN module service providers: ATT and Verizon
Ports Hot plug/unplug and autodetect for correct output to wide-aspect vs. standard aspect video
●Audio-out (headphone)/Audio-in (microphone) combo jack
●HDMI port
●SIM card slot (select products only)
●Smart card reader (select products only)
●USB SuperSpeed 5 Gbps port
●USB SuperSpeed 5 Gbps port with HP Sleep and Charge
●USB Type-C® power connector and SuperSpeed port with HP Sleep and Charge and DisplayPort output
●USB Type-C power connector and Thunderbolt™ port with HP Sleep and Charge and DisplayPort output
(select products only)
Keyboard/pointing
devices
Keyboard: Backlit, spill-resistant, premium notebook PC keyboard with Clickpad and privacy features
Touchpad
Clickpad with image sensor
Multitouch gestures enabled
Precision touchpad support
Support for Modern Trackpad Gestures
Taps enabled as default
Product description 3
Table 1-1 Product components and their descriptions (continued)
Category Description
Power requirements Battery
3 cell, 38 Whr, polymer, HP Long Life
HP Fast Charge Technology
Smart AC adapter:
65 W, non-Power Factor Correction (nPFC), standard USB Type-C® straight barrel, 1.8m (6.0 ft)
65 W, nPFC, slim USB Type-C straight barrel, 1.8m (6.0 ft)
45 W, nPFC, standard USB Type-C straight barrel, 1.8m (6.0 ft)
Power cord:
C5, 1.0 m (3.3 ft), conventional, high frequency (HF), with straight connector and sticker
C5, 1.0 m (3.3 ft), conventional with sticker
C5, 1.0 m (3.3 ft), premium with sticker
Security Active SmartCard
Integrated ngerprint reader
Privacy camera shutter door
Sensors Adaptive color sensor (ACS)
Ambient light sensor (ALS)
Hall sensor (integrated)
HP Sure Platform
Motion AI
Thermal sensor
Time of Flight (ToF)
4 Chapter 1Product description
Table of contents
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