HP ProBook 450 G4 Notebook PC
HP ProBook 455 G4 Notebook PC
Maintenance and Service Guide
© Copyright 2016 HP Development Company,
L.P.
AMD is a trademark of Advanced Micro Devices,
Inc. Bluetooth is a trademark owned by its
proprietor and used by HP Inc. under license.
Intel is a trademark of Intel Corporation in the
U.S. and other countries. Windows is a
trademarks of the Microsoft group of
companies.
The information contained herein is subject to
change without notice. The only warranties for
HP products and services are set forth in the
express warranty statements accompanying
such products and services. Nothing herein
should be construed as constituting an
additional warranty. HP shall not be liable for
technical or editorial errors or omissions
contained herein.
First Edition: September 2016
Document Part Number: 903116-001
Product notice
This user 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 of
Windows. This computer may require upgraded
and/or separately purchased hardware, drivers
and/or software to take full advantage of
Windows functionality. Go to
http://www.microsoft.com for details.
Your product does not support Windows 8 or
Windows 7
In accordance with Microsoft’s support policy,
HP does not support the Windows 8 or
Windows 7 operating system on this product or
provide any Windows 8 or Windows 7 drivers
on http://support.hp.com.
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.
Important Notice about Customer Self-Repair Parts
CAUTION: Your computer includes Customer Self-Repair parts and parts that should only be accessed by an
authorized service provider. See Chapter 5, "Removal and replacement procedures for Customer Self-Repair
parts," for details. Accessing parts described in Chapter 6, "Removal and replacement procedures for
Authorized Service Provider only parts," can damage the computer or void your warranty.
iii
iv Important Notice about Customer Self-Repair Parts
Safety warning notice
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 airow. Also, do not allow the AC adapter to contact the skin or a soft
surface, such as pillows or rugs or clothing, during operation. The computer and the AC adapter comply with
the user-accessible surface temperature limits dened by the International Standard for Safety of
Information Technology Equipment (IEC 60950-1).
v
vi Safety warning notice
Table of contents
1 Product description ....................................................................................................................................... 1
2 Components .................................................................................................................................................. 6
Right ....................................................................................................................................................................... 6
Left ......................................................................................................................................................................... 7
Display .................................................................................................................................................................... 8
Top .......................................................................................................................................................................... 9
TouchPad ............................................................................................................................................. 9
Lights ................................................................................................................................................. 10
Buttons, speakers, and ngerprint reader ........................................................................................ 11
Special function keys ........................................................................................................................ 12
Using the hot keys ............................................................................................................................. 13
Bottom ................................................................................................................................................................. 14
Labels ................................................................................................................................................................... 15
3 Illustrated parts catalog .............................................................................................................................. 16
Computer major components .............................................................................................................................. 16
Cable Kit ............................................................................................................................................................... 20
Display components ............................................................................................................................................ 21
Plastics Kit ........................................................................................................................................................... 23
Mass storage devices ........................................................................................................................................... 24
Miscellaneous parts ............................................................................................................................................. 25
4 Removal and replacement procedures preliminary requirements .................................................................... 27
Tools required ...................................................................................................................................................... 27
Service considerations ......................................................................................................................................... 27
Plastic parts ....................................................................................................................................... 27
Cables and connectors ...................................................................................................................... 28
Drive handling ................................................................................................................................... 28
Grounding guidelines ........................................................................................................................ 29
Electrostatic discharge damage ..................................................................................... 29
Packaging and transporting guidelines ....................................................... 30
Workstation guidelines ................................................................................ 30
Equipment guidelines ................................................................................... 31
vii
5 Removal and replacement procedures for Customer Self-Repair parts ............................................................. 32
Component replacement procedures .................................................................................................................. 32
Battery Safe mode ............................................................................................................................ 32
Service door ....................................................................................................................................... 33
Optical drive ....................................................................................................................................... 34
Hard drive .......................................................................................................................................... 36
Memory modules ............................................................................................................................... 38
WLAN/Bluetooth combo card ............................................................................................................ 40
WWAN module ................................................................................................................................... 42
M.2 solid-state drive ......................................................................................................................... 44
Keyboard ........................................................................................................................................... 45
6 Removal and replacement procedures for Authorized Service Provider parts ................................................... 48
Component replacement procedures .................................................................................................................. 48
Display subcomponents (bezel, webcam, panel) ............................................................................. 48
Top cover ........................................................................................................................................... 52
Fingerprint reader assembly ............................................................................................................. 56
Power button board .......................................................................................................................... 58
Function board .................................................................................................................................. 60
Speaker assembly ............................................................................................................................. 62
TouchPad assembly ........................................................................................................................... 64
Battery ............................................................................................................................................... 66
USB/audio board ................................................................................................................................ 68
Fan ..................................................................................................................................................... 70
Optical drive connector cable ............................................................................................................ 72
System board .................................................................................................................................... 74
RTC battery ........................................................................................................................................ 77
Heat sink assembly ........................................................................................................................... 79
Display assembly ............................................................................................................................... 82
Power connector and cable ............................................................................................................... 89
7 Computer Setup (BIOS), TPM, and HP Sure Start ............................................................................................. 91
Using Computer Setup ......................................................................................................................................... 91
Starting Computer Setup .................................................................................................................. 91
Navigating and selecting in Computer Setup ................................................................................... 91
Restoring factory settings in Computer Setup ................................................................................. 91
Updating the BIOS ............................................................................................................................. 92
Determining the BIOS version ......................................................................................... 92
Downloading a BIOS update ........................................................................................... 93
Changing the boot order using the f9 prompt .................................................................................. 93
viii
TPM BIOS settings (select products only) ........................................................................................................... 94
Using HP Sure Start (select products only) ......................................................................................................... 94
8 Using HP PC Hardware Diagnostics (UEFI) ....................................................................................................... 95
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................... 95
Blink and beep codes ........................................................................................................................................... 96
9 Backup and recovery .................................................................................................................................... 97
Creating recovery media and backups ................................................................................................................ 97
Creating HP Recovery media (select products only) ......................................................................... 97
Using Windows tools ........................................................................................................................................... 98
Restore and recovery ........................................................................................................................................... 99
Recovering using HP Recovery Manager ........................................................................................... 99
What you need to know before you get started ............................................................. 99
Using the HP Recovery partition (select products only) .............................................. 100
Using HP Recovery media to recover ............................................................................ 100
Changing the computer boot order .............................................................................. 101
Removing the HP Recovery partition (select products only) ....................................... 102
10 Specications .......................................................................................................................................... 103
Computer specications .................................................................................................................................... 103
39.6-cm (15.6-in) display specications .......................................................................................................... 104
Hard drive specications ................................................................................................................................... 105
Solid-state drive specications ......................................................................................................................... 106
DVD±RW SuperMulti DL Drive specications .................................................................................................... 107
Blu-ray ROM DVD±RW SuperMulti DL Drive ....................................................................................................... 108
DVD-ROM drive .................................................................................................................................................. 109
11 Statement of memory volatility ................................................................................................................ 110
Nonvolatile memory usage ............................................................................................................................... 113
Questions and answers ..................................................................................................................................... 115
Using HP Sure Start (select models only) .......................................................................................................... 116
12 Power cord set requirements .................................................................................................................... 117
Requirements for all countries and regions ...................................................................................................... 117
Requirements for specic countries and regions ............................................................................................. 117
13 Recycling ................................................................................................................................................ 119
Index ........................................................................................................................................................... 120
ix
x
1 Product description
Category Description 450
UMA
Product Name HP ProBook 450 G4 Notebook PC √ √
HP ProBook 455 G4 Notebook PC √
Processors
AMD processors
Graphics Integrated UMA graphics GT1 and GT2
7th generation, Intel® Core™ i7 processor, Dual Core (4-MB L3 cache, 15 W)
7500U, 2.7 GHz/3.5 GHz Single Core Turbo; Intel HD Graphics 620
7th generation, Intel Core i5 processors, Dual Core (3-MB L3 cache, 15 W)
7200U, 2.5-GHz/3.1-GHz Single Core Turbo processor; Intel HD Graphics 620
7th generation, Intel Core i3 processors, Dual Core (3-MB L3 cache, 15 W)
7100U, 2.4-GHz processor; Intel HD Graphics 620
6th generation, Intel Core i3 processor, Dual Core (3-MB L3 cache, 15 W)
6006U, 2.0-GHz processor; Intel HD Graphics 520
A10-9600P, 3.3-GHz processor, 2 MB L2 cache, quad core, 15W; Radeon R5
Graphics
A9-9410, 3.5-GHz processor, 1 MB L2 cache, dual core, 15W; Radeon R5 Graphics
A6-9210, 2.8-GHz processor, 1 MB L2 cache, dual core, 15W; Radeon R4 Graphics
Integrated with shared video memory, dynamically allocated
x
√ √
√
450
Discrete
√
455
UMA
Integrated UMA graphics
Integrated with shared video memory, dynamically allocated
Switchable discrete graphics
Nvidia GeForce 930MX with 2 GB dedicated video memory
Supports HD decode, DX12, HDMI
Supports CUDA, Optimus, PhysX, GPU Boost 2.0
Panel 39.6-cm (15.6-inch), LED backlight, 16:9 aspect ratio, Anti-glare, HD, 1366x768,
SVA, 220 nits, HD eDP - slim (3.2 mm)
1 or 2 WLAN antennas
Webcam, 1 or 2 WLAN antennas, WWAN
39.6-cm (15.6-inch), LED backlight, 16:9 aspect ratio, Anti-glare, HD, 1366x768,
SVA, 220 nits, HD eDP - slim (3.2 mm)
Webcam, 1 or 2 WLAN antennas √ √
1 or 2 WLAN antennas
Webcam, 1 or 2 WLAN antennas
√
√
√
√
1
Category Description 450
UMA
450
Discrete
455
UMA
1 or 2 WLAN antennas
Webcam, 1 or 2 WLAN antennas, WWAN
39.6-cm (15.6-inch), LED backlight, 16:9 aspect ratio, HD, 1366x768, 220 nits,
HD eDP - slim (3.2 mm)
Touch panel, 1 or 2 WLAN antennas √ √
Touch panel, 1 or 2 WLAN antennas, 2 WWAN antennas √
39.6-cm (15.6-inch), LED backlight, 16:9 aspect ratio, Anti-glare, FHD,
1920x1080, SVA, 220 nits, HD eDP - slim (3.2 mm)
Webcam, 1 or 2 WLAN antennas √ √
1 or 2 WLAN antennas
Webcam, 1 or 2 WLAN antennas
Memory Two customer-accessible memory module slots supporting up to 16 GB of RAM
Supports dual-channel memory
PC4-17000, 2133-MHz, DDR4 SODIMMs
NOTE: 450 models run at 2133 MHz; 455 models run at 1866 MHz
Supports the following congurations:
●
16384 MB (8192 × 2; dual channel)
●
12288 MB (8192 + 4096; dual channel)
●
8192 MB (8192 × 1)
●
8192 MB (4096 × 2; dual channel)
●
4096 MB (4096 × 1)
√
√
√ √ √
Primary
storage
Fixed optical
drives
Supports the following 9.5-mm SATA optical drives:
Supports hard drives with HP 3D DriveGuard
Customer-accessible
Supports the following 7 mm/9.5 mm, 2.5 inch hard drives:
●
2.0-TB, 5400-rpm
●
1-TB, 5400-rpm
●
500-GB, 7200-rpm
●
500-GB, hybrid (8-GB SSD)
●
500-GB, 5400-rpm
Supports the following 9.5-mm SATA optical drives:
●
DVD-ROM
●
DVD+/-RW SuperMulti DL
●
Blu-ray ROM DVD+/-RW SuperMulti DL
Supports no optical drive option
●
DVD-ROM
√ √ √
√ √
√
2 Chapter 1 Product description
Category Description 450
UMA
●
DVD+/-RW SuperMulti DL
Supports no optical drive option
450
Discrete
455
UMA
Primary M.2
storage
M.2 2280 SSD (NGFF), SATA-3
Audio/Visual Audio controls
Ethernet Realtek RTL8111HSH 10/100/1000
M.2 2280 SSD (NGFF), SATA-3
Supports the following drives:
●
256 GB
●
128 GB
Set as primary storage if selected.
Supports the following drives:
●
128 GB
Set as primary storage if selected.
Integrated camera (720p HD)
Stereo speakers (2)
Integrated dual-array microphone (webcam models only)
Integrated mono microphone (non-webcam UMA models only)
Headphone/microphone combo jack
S3/S4/S5 wake on LAN (AC mode and battery mode)
√ √
√
√ √ √
√ √ √
Wireless WLAN
Integrated WLAN options by way of wireless module
WLAN antennas built into display assembly
Supports “no WLAN/Bluetooth” option
Wireless Personal Area Network (PAN) Bluetooth
WWAN
●
Realtek RTL8723BE-VB 802.11b/g/n 1x1 Wi-Fi + Bluetooth 4.0 combination
WLAN adapter
●
Intel Dual Band Wireless-AC 3168 802.11ac, Dual Band, 1×1 Wi-Fi + Bluetooth
4.0
●
Intel Dual Band Wireless-AC 7265NV (non v-Pro) 802.11 ac 2×2 WiFi +
Bluetooth 4.2 Combo Adapter
●
Realtek RTL8723BE-VB 802.11b/g/n 1x1 Wi-Fi + Bluetooth 4.0 combination
WLAN adapter
●
Intel Dual Band Wireless-AC 3168 802.11ac, Dual Band, 1×1 Wi-Fi + Bluetooth
4.0
Bluetooth 4.0 supported using combo card
SIM module: Micro SIM/3FF (user accessible under service door)
WWAN options using connector
√ √ √
√ √
√
√ √ √
√
3
Category Description 450
UMA
Huawei HP It4132, LTE/HSPA+ w/GPS M.2
WWAN antennas (2), worldwide, 5 band, congured at top of panel
Supports “No WWAN” option
450
Discrete
455
UMA
External media
card
Digital Media Reader Slot
Supports SD, SDHC, SDXC
Ports Headphone/microphone combo jack
RJ-45 (Ethernet, includes link and activity lights)
USB 3.0 (1)
USB 2.0 (2)
VGA (Dsub 15-pin) supporting 2048 × 1536 external resolution at 60-GHz (hot
plug/unplug with auto-detect)
HDMI 1.4
Multi-pin AC port
Keyboard/
pointing
devices
Keyboards
HP Premium Keyboard
Full-sized, chiclet, spill-resistant keyboard with numeric keypad (backlit or not
backlit)
Touchpad requirements
Windows 10 gestures: taps enabled by default: on/o control by driver, 2-nger
scrolling and zoom enabled by default, OSD (enable/disable), 3-nger tap Cortana, 3- nger ick - App switch, 4-nger tap - Action Center
Power
requirements
Power cords
3-wire plug - 1.8 m
3-wire plug - 1.0 m
2-wire plug - 1.0 m
Battery
3-cell, 48-Wh, 4.21-Whr Li-ion battery
√ √ √
√ √ √
√ √ √
√ √ √
AC adapters
65-W Smart AC adapter √ √
45-W Smart AC adapter √ √ √
Security Integrated ngerprint reader
Supports “No ngerprint reader” option
Security lock
TPM 2.0 SLB9670 (Inneon; soldered down)
Operating
system
Operating system version
Windows 10: Threshold 2
Preinstalled
4 Chapter 1 Product description
√ √ √
x
√ √ √
Category Description 450
UMA
Windows 10 Home 64
Windows 10 Home 64 Single Language
Windows 10 Home 64 StF MSNA for Higher Education - Strategic
Windows 10 Home 64 High-end
Windows 10 Home 64 High-end Single Language
Windows 10 Professional 64
Windows 10 Professional 64 - StF MSNA - Standard
Windows 10 Professional 64 - StF MSNA - High End
Windows 10 Professional 64 - StF MSNA - Strategic
FreeDOS 2.0
450
Discrete
455
UMA
Restore Media (DRDVD/SRDVD)
√ √ √
DRDVD Windows 10
Restore Media (OSDVD)
√ √ √
Windows 10 Professional 64
Web-only support
√ √ √
Windows 10 Enterprise
Certied
√ √ √
Microsoft WHQL
Serviceability End-user replaceable parts
√ √ √
AC adapter
Hard drive
Optical drive
M.2 solid-state drive
Memory module
WLAN module
Keyboard
x
Your product does not support Windows 8 or Windows 7. In accordance with Microsoft’s support policy, HP does not support the
Windows 8 or Windows 7 operating system on this product or provide any Windows 8 or Windows 7 drivers on
http://www.support.hp.com.
5
2 Components
Right
Component Description
(1) Optical drive (select products only) Depending on your computer model, reads an optical disc or reads and
writes to an optical disc.
(2) Optical drive eject button (select
products only)
(3) Audio-out (headphone)/Audio-in
(microphone) combo jack
(4) USB 2.0 ports (2) Connect an optional USB device, such as a keyboard, mouse, external
Releases the optical drive disc tray.
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, refer to the Regulatory, Safety, and Environmental
Notices.
To access this guide:
1. Type support in the taskbar search box, and then select the HP
Support Assistant app.
‒ or –
Click the question mark icon in the taskbar.
2. Select My PC, select the Specications tab, and then select User
Guides.
NOTE: When a device is connected to the jack, the computer speakers
are disabled.
drive, printer, scanner or USB hub.
(5) RJ-45 (network) jack/status lights Connects a network cable.
(6) Security cable slot Attaches an optional security cable to the computer.
6 Chapter 2 Components
●
Green (left): The network is connected.
●
Amber (right): Activity is occurring on the network.
NOTE: The security cable is designed to act as a deterrent, but it may
not prevent the computer from being mishandled or stolen.
Left
Component Description
(1) Power connector Connects an AC adapter.
(2) Battery light When AC power is connected:
●
White: The battery charge is greater than 90 percent.
●
Amber: The battery charge is from 0 to 90 percent.
●
O: The battery is not charging.
When AC power is disconnected (battery not charging):
●
Blinking amber: The battery has reached a low battery
level. When the battery has reached a critical battery level,
the battery light begins blinking rapidly.
●
O: The battery is not charging.
(3) Vent Enables airow 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.
(4) External monitor port Connects an external VGA monitor or projector.
(5) HDMI port Connects an optional video or audio device, such as a high-
denition television, any compatible digital or audio component,
or a high-speed High Denition Multimedia Interface (HDMI)
device.
(6) USB 3.0 port Connects an optional USB device, such as a keyboard, mouse,
external drive, printer, scanner or USB hub.
(7) USB Type-C charging port Connects any USB device with a Type-C connector and can charge
products such as cell phones, laptops, tablets, and MP3 players.
(8) Memory card reader Reads optional memory cards that store, manage, share, or
access information.
(9) Drive light
●
Blinking white: The hard drive is being accessed.
●
Amber: HP 3D DriveGuard has temporarily parked the hard
drive.
Left 7
Display
NOTE: Refer to the illustration that most closely matches your computer.
Component Description
(1) WLAN antennas* (select products only) Send and receive wireless signals to communicate with wireless local
area networks (WLANs).
(2) WWAN antennas* (select products only) Send and receive wireless signals to communicate with wireless wide
area networks (WWANs).
(3) Internal microphones (1 or 2 depending on model) Record sound.
(4) Webcam light (select products only) On: The webcam is in use.
(5) Webcam (select products only) Records video and captures photographs. Some models allow you to
*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.
To access this guide:
1. Type support in the taskbar search box, and then select the HP Support Assistant app.
‒ or –
Click the question mark icon in the taskbar.
2. Select My PC, select the Specications tab, and then select User Guides.
video conference and chat online using streaming video.
To use the webcam:
▲ Type camera in the taskbar search box, and then select
Camera.
8 Chapter 2 Components
Top
TouchPad
Component Description
(1) TouchPad zone Reads your nger gestures to move the pointer or activate
items on the screen.
(2) Left TouchPad button Functions like the left button on an external mouse.
(3) Right TouchPad button Functions like the right button on an external mouse.
Top 9
Lights
Component Description
(1) Power light
(2) Caps lock light On: Caps lock is on, which switches the key input to all capital
(3) Microphone mute light
(4) Num lock light On: Num lock is on.
(5) Wireless light On: An integrated wireless device, such as a wireless local area
(6) Mute light
●
On: The computer is on.
●
Blinking: The computer is in the Sleep state, a power-saving
state. The computer shuts o power to the display and
other unneeded components.
●
O: The computer is o or in Hibernation. Hibernation is a
power-saving state that uses the least amount of power.
letters.
●
Amber: microphone sound is o.
●
O: microphone sound is on.
network (WLAN) device and/or a Bluetooth® device, is on.
NOTE: On some models, the wireless light is amber when all
wireless devices are o.
●
Amber: Computer sound is o.
●
White: Computer sound is on.
10 Chapter 2 Components
Buttons, speakers, and ngerprint reader
Component Description
(1) Power button
(2) Speakers (2) Produce sound.
(3) Wireless button Turns the wireless feature on or o but does not establish a wireless
●
When the computer is o, press the button to turn on the computer.
●
When the computer is on, press the button briey to initiate Sleep.
●
When the computer is in the Sleep state, press the button briey to
exit Sleep.
●
When the computer is in Hibernation, press the button briey to exit
Hibernation.
CAUTION: Pressing and holding down the power button results in the
loss of unsaved information.
If the computer has stopped responding and shutdown procedures are
ineective, press and hold the power button for at least 5 seconds to turn
o the computer.
To learn more about your power settings, see your power options.
▲ Type power in the taskbar search box, and then select Power and
sleep settings.
‒ or –
Right-click the Start button, and then select Power Options.
connection.
A wireless network must be set up before a wireless connection is
possible.
(4) Volume mute button Mutes and restores speaker sound.
(5) Fingerprint reader (select products
only)
Allows a ngerprint logon to Windows, instead of a password logon.
Top 11
Special function keys
Component Description
(1) esc key Displays system information when pressed in combination with
(2) fn key Executes frequently used system functions when pressed in
(3) Windows key Opens the Start menu.
the fn key.
combination with a function key, the num lock key, or the the
esc key.
See Using the hot keys on page 13.
NOTE: Pressing the Windows key again will close the Start
menu.
(4) num lock key Alternates between the navigational and numeric functions on
the integrated numeric keypad.
(5) Integrated numeric keypad A separate keypad to the right of the alphabet keyboard that
enables you to add, subtract, and perform other numeric tasks.
When num lock is on, the integrated keypad can be used like an
external numeric keypad.
12 Chapter 2 Components
Using the hot keys
To use a hot key:
▲
Press the fn key, and then press the correct function key represented by the icons below.
Press fn+function key Description
Initiates Sleep, which saves your information in system memory. The display and other system components
turn o and power is conserved.
To exit Sleep, briey press the power button.
CAUTION: To reduce the risk of information loss, save your work before initiating Sleep.
Turns the keyboard backlight o or on.
NOTE: To conserve battery power, turn o this feature.
Switches the screen image between display devices connected to the system. For example, if a monitor is
connected to the computer, repeatedly pressing this key alternates the screen image from the computer
display to the monitor display to a simultaneous display on both the computer and the monitor.
Decreases the screen brightness incrementally as long as you hold down the key.
Increases the screen brightness incrementally as long as you hold down the key.
Decreases speaker volume incrementally while you hold down the key.
Increases speaker volume incrementally while you hold down the key.
Mutes the microphone.
Top 13
Bottom
Component Description
(1) Service door Provides access to the hard drive bay, the WLAN module
slot, the WWAN module slot, the SIM card slot, and the
memory module slots.
CAUTION: To prevent an unresponsive system, replace
the wireless module only with a wireless module
authorized for use in the computer by the governmental
agency that regulates wireless devices in your country or
region. If you replace the module and then receive a
warning message, remove the module to restore computer
functionality, and then contact support.
▲ Type support in the taskbar search box, and then
select the HP Support Assistant app.
- or -
Click the question mark icon in the taskbar.
(2) SIM card slot or locking hinged connector
(3) Vents (2) Enable airow to cool internal components.
14 Chapter 2 Components
(select products only)
Supports a wireless subscriber identity module (SIM) card.
The SIM card slot or locking hinged connector is located
under the service door.
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.
Labels
The labels axed to the computer provide information you may need when you troubleshoot system
problems or travel internationally with the computer.
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, or on the back of the display.
●
Service label—Provides important information to identify your computer. When contacting support, you
will probably be asked for the serial number, and possibly for the product number or the model number.
Locate these numbers before you contact support.
Your service label will resemble one of the examples shown below. Refer to the illustration that most
closely matches the service label on your computer.
Component
(1) Serial number
(2) Product number
(3) Warranty period
(4) Model number (select products only)
Component
(1) HP product name
(2) Product ID number
(3) Serial number
(4) Warranty period
●
Regulatory label(s)—Provide(s) regulatory information about the computer.
●
Wireless certication 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.
Labels 15
3 Illustrated parts catalog
Computer major components
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then
follow the on-screen instructions.
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. See Labels on page 15 for details.
16 Chapter 3 Illustrated parts catalog
Item Description Spare part number
(1a) Display panel assembly, touch
Touch display are only spared as entire hinge-ups. Individual components are not spared.
Models without WWAN 907724-001
Models with WWAN 907725-001
(1b) Display panel assembly, non-touch
Non-touch displays are ONLY spared at the subcomponent level. For more information about
display components, see Display components on page 21.
(2) Keyboard (includes cable)
NOTE: For a detailed list of keyboard country codes, see Keyboard on page 45.
No backlight 827028-xxx
Backlit 827029-xxx
(3) Power button board 905754-001
(4) Top cover (includes touchpad assembly) 905765-001
(5) Function board 905753-001
(6) Fingerprint reader assembly (includes cable) 905772-001
(7) Speaker assembly 905773-001
(8) Battery, Li-ion (4-cell, 48 WHr, 4.21 Ah) 851610-855
(9) Fan 905774-001
(10) USB/audio board 905755-001
(11) Optical drive cable and connector
NOTE: The optical drive cable and connector is included in the Cable Kit.
(12) Power connector cable 828949-007
Conductive fabric (for use with the power connector cable) 914604-001
(13) System board (includes replacement thermal material)
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating system
xxxxxx-601: Windows 10 operating system
For use in HP ProBook 450 G4 models:
●
Intel Core i7-7500U processor; 2-GB discrete graphics memory 907715-xxx
●
Intel Core i5-7200U processor; 2-GB discrete graphics memory 907714-xxx
●
Intel Core i3-7100U processor; 2-GB discrete graphics memory 907713-xxx
●
Intel Core i7-7500U processor; UMA graphics memory 907712-xxx
●
Intel Core i5-7200U processor; UMA graphics memory 907713-xxx
●
Intel Core i5-7200U processor; UMA graphics memory, WWAN models 907711-xxx
905769-001
●
Intel Core i3-7100U processor; UMA graphics memory 907702-xxx
Computer major components 17
Item Description Spare part number
For use in HP ProBook 455 G4 models:
(14) Heat sink assembly (discrete model shown; includes replacement thermal material)
Discrete graphics models 907364-001
UMA graphics models 907359-001
(15) RTC battery not spared
(16) Base enclosure 905764-001
(17) WLAN module
For use in all models:
For use in HP ProBook 450 models:
●
Intel Core i3-6006U processor; UMA graphics memory 913957-xxx
●
AMD A10-9600P 907356-xxx
●
AMD A9-9410 907358-xxx
●
AMD A6-9210 907357-xxx
●
Realtek RTL8723BE-VB 802.11b/g/n 1x1 Wi-Fi + Bluetooth 4.0 combination WLAN adapter 843338-001
●
Intel Dual Band Wireless-AC 7265NV (non v-Pro) 802.11 ac 2×2 WiFi + Bluetooth 4.2 Combo
Adapter
●
Intel Dual Band Wireless-AC 3168 802.11ac, Dual Band, 1×1 Wi-Fi + Bluetooth 4.0 852511-001
860883-001
(18) Memory modules (PC4-17000)
8-GB 862398-850
4-GB 862397-850
(19) WWAN module
Huawei HP It4132, LTE/HSPA+ w/GPS M.2 845710-001
(20) Solid-state drive, M.2 (includes bracket)
For use in HP ProBook 450 G4 models:
For use in HP ProBook 455 G4 models:
(21) Hard drive
For use in all models:
●
256-GB 907722-001
●
128-GB 907723-001
●
128-GB 907360-xxx
●
2 TB, 5400 rpm, 9.5 mm 801808-001
●
1 TB, 5400 rpm, 7 mm 778192-001
●
500 GB, 7200 rpm, 7 mm 778189-001
For use in HP ProBook 450 G4 models:
●
500 GB, 5400 rpm, 7 mm 778187-001
18 Chapter 3 Illustrated parts catalog
Item Description Spare part number
For use in HP ProBook 455 G4 models:
(22) Hard drive cover
(23) Service door
(24) Optical drive
For use in HP ProBook 450 G4 models:
For use in HP ProBook 455 G4 models:
●
500 GB, 5400 rpm, 7 mm, hybrid (8-GB SSD) 732000-001
●
500 GB, 7200 rpm, 7 mm 703267-001
●
500 GB, 5400 rpm, 7 mm 778186-001
NOTE: The hard drive cover is included in the Hard Drive Hardware Kit.
NOTE: The service door is included in the Hard Drive Hardware Kit
●
Blu-ray Disc R/RW with SuperMulti Drive 907719-001
●
DVD+/-RW Double-Layer SuperMulti Drive 907721-001
●
DVD-ROM Drive 907720-001
●
DVD+/-RW Double-Layer SuperMulti Drive 907606-001
●
DVD-ROM Drive 907605-001
905771-001
905771-001
Computer major components 19
Cable Kit
Item Description Spare part number
Cable Kit 906000-001
(1) USB board cable
(2) TouchPad cable
(3) Power button board cable
(4) Optical drive cable
(5) Function board cable
20 Chapter 3 Illustrated parts catalog
Display components
Item Description Spare part number
(1) Display bezel
Models without a webcam 905757-001
Models with a webcam 905756-001
Models with a DVD-ROM drive 905766-001
Models with a DVD+/-RW Double-Layer SuperMulti drive 905767-001
Models with a Blu-ray Disc R/RW with SuperMulti drive 905768-001
Display components 21
Item Description Spare part number
(2) Webcam module 805139-009
Microphone module 826385-001
(3) Hinge covers (left and right) 905763-001
(4) WLAN antennas
NOTE: Included in display enclosure
(5) Display/webcam cable assembly
WLAN models 905760-001
WWAN models 905761-001
(6) WWAN antennas
NOTE: Included in display enclosure
(7) Display Hinge Kit, includes: 905762-001
Left hinge
Right hinge
(8) Display panel (raw)
FHD 809001-003
HD 860030-002
(9) Display rear cover (includes wireless antennas)
For use in models with WLAN 905758-001
For use in models with WWAN 905759-001
not spared
not spared
22 Chapter 3 Illustrated parts catalog
Plastics Kit
Item Description Spare part number
Plastics Kit 905770-001
(1) Fingerprint reader insert (for use in models without a ngerprint reader)
(2) Fingerprint reader bracket
(3) Optical drive bracket
(4) Optical drive insert (for models without an optical drive)
Plastics Kit 23
Mass storage devices
Item Description Spare part number
(1) Optical drives
For use in HP ProBook 450 G4 models:
For use in HP ProBook 455 G4 models:
(2) Solid-state drives, M.2 (includes bracket)
For use in HP ProBook 450 G4 models:
For use in HP ProBook 455 G4 models:
(3) Hard drives
For use in all models:
●
Blu-ray Disc R/RW with SuperMulti drive 907719-001
●
DVD+/-RW Double-Layer SuperMulti drive 907721-001
●
DVD-ROM drive 907720-001
●
DVD+/-RW Double-Layer SuperMulti drive 907606-001
●
DVD-ROM drive 907605-001
●
256-GB 907722-001
●
128-GB 907723-001
●
128-GB 907360-001
●
2 TB, 5400 rpm, 9.5 mm 801808-001
●
1 TB, 5400 rpm, 7 mm 778192-001
For use in HP ProBook 450 G4 models:
For use in HP ProBook 455 G4 models:
●
500 GB, 7200 rpm, 7 mm 778189-001
●
500 GB, 5400 rpm, 7 mm 778187-001
●
500 GB, 5400 rpm, 7 mm, hybrid (8-GB SSD) 732000-001
24 Chapter 3 Illustrated parts catalog
Item Description Spare part number
(4) Hard drive cover
●
500 GB, 7200 rpm, 7 mm 703267-001
●
500 GB, 5400 rpm, 7 mm 778186-001
NOTE: The hard drive cover is included in the Hard Drive Hardware Kit.
Miscellaneous parts
Description Spare part number
AC adapters
65-W Smart AC power adapter, 4.5 mm barrel connector, 3 prong 710412-001
65-W Smart AC power adapter, 4.5 mm barrel connector (for use only in Asia, the People’s Republic of
China, and India)
65-W Smart AC power adapter, 4.5 mm barrel connector, 3 prong, NPFC (for use only in Asia, the People’s
Republic of China, and India) for use only HP ProBook 455 G4 models
65-W Smart AC power adapter, 4.5 mm barrel connector, NPFC 693711-001
45-W Smart AC power adapter, 4.5 mm barrel connector, 3 prong, NPFC (for use only in Asia, the People’s
Republic of China, and India) for use only HP ProBook 450 G4 models
45-W Smart AC power adapter, 4.5 mm barrel connector, 3 prong, NPFC 741727-001
905771-001
714635-850
714657-001
741553-850
45-W Smart AC power adapter, 4.5 mm barrel connector, 2 prong 742436-001
Power cord (3-pin, C5, black, 1.83-m), for use in:
Australia 213356-001
Denmark 213353-001
Europe (Austria, Belgium, Finland, France, Germany, the Netherlands, Norway and Sweden) 213350-001
India 404827-001
Israel 398063-001
Italy 213352-001
Japan 349756-001
North America 213349-001
South Africa 361240-001
South Korea 267836-001
Switzerland 213354-001
Taiwan 393313-001
Thailand 285096-001
United Kingdom and Singapore 213351-001
Power cord (3-pin, C5, black, 1.00-m), for use in:
Australia 213356-008
Miscellaneous parts 25
Description Spare part number
Denmark 213353-008
Europe (Austria, Belgium, Finland, France, Germany, the Netherlands, Norway and Sweden) 213350-009
India 404827-003
Israel 398063-003
Italy 213352-008
Japan 349756-002
North America 213349-009
South Africa 361240-002
South Korea 267836-008
Switzerland 213354-008
Taiwan 393313-003
Thailand 285096-006
United Kingdom and Singapore 213351-008
Power cord (3-pin, C7, black, 1.00-m), for use in:
Japan 190548-003
Screw Kit 905776-001
Mouse
HP USB Laser Mouse 674318-001
HP Comfort Grip Wireless Mouse 691922-001
HP USB Travel Mouse 757770-001
Cases
Top load case 679921-001
Messenger bag 679922-001
Backpack 679923-001
HP keyed cable lock 840158-001
HP ultraslim keyed cable lock 703372-001
HP Smart AC Adapter dongle, 7.4 mm 734734-001
HP Elite USB Type-C Docking Station 844550-001
HP USB Travel Dock 844551-001
USB 3.0 port replicator 690650-001
USB 3.0 A to B cable (0.5 m) 690652-001
26 Chapter 3 Illustrated parts catalog
4 Removal and replacement procedures
preliminary requirements
Tools required
You will need the following tools to complete the removal and replacement procedures:
●
Flat-bladed screwdriver
●
Phillips P0 and P1 screwdrivers
●
Torx T8 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
CAUTION: Using excessive force during disassembly and reassembly can damage plastic parts. Use care
when handling the plastic parts. Apply pressure only at the points designated in the maintenance
instructions.
Tools required 27
Cables and connectors
CAUTION: 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.
Cables must be handled with extreme care to avoid damage. 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 in such a way that they cannot be caught
or snagged by parts being removed or replaced. Handle ex cables with extreme care; these cables
tear easily.
Drive handling
CAUTION: Drives are fragile components that must be handled 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 a diskette drive or optical drive, be sure that a diskette or disc is not in the drive and be sure
that the optical drive tray is closed.
Handle drives on surfaces covered with at least one inch of shock-proof foam.
Avoid dropping drives from any height onto any surface.
After removing a hard drive, an optical drive, or a diskette drive, place it in a static-proof bag.
Avoid exposing a 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.”
28 Chapter 4 Removal and replacement procedures preliminary requirements
Grounding guidelines
Electrostatic discharge damage
Electronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure determine
the degree of sensitivity. Networks built into many integrated circuits provide some protection, but in many
cases, ESD contains enough power to alter device parameters or melt silicon junctions.
A discharge of static electricity from a nger or other conductor can destroy static-sensitive devices or
microcircuitry. Even if the spark is neither felt nor heard, damage may have occurred.
An electronic device exposed to ESD may not be aected at all and can work perfectly throughout a normal
cycle. Or the device may function normally for a while, and then degrade in the internal layers, reducing its life
expectancy.
CAUTION: To prevent damage to the computer when you are removing or installing internal components,
observe these precautions:
Keep components in their electrostatic-safe containers until you are ready to install them.
Use nonmagnetic tools.
Before touching an electronic component, discharge static electricity by using the guidelines described in this
section.
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.
The following table shows how humidity aects the electrostatic voltage levels generated by dierent
activities.
CAUTION: A product can be degraded by as little as 700 V.
Typical electrostatic voltage levels
Relative humidity
Event 10% 40% 55%
Walking across carpet 35,000 V 15,000 V 7,500 V
Walking across vinyl oor 12,000 V 5,000 V 3,000 V
Motions of bench worker 6,000 V 800 V 400 V
Removing DIPS from plastic tube 2,000 V 700 V 400 V
Removing DIPS from vinyl tray 11,500 V 4,000 V 2,000 V
Removing DIPS from Styrofoam 14,500 V 5,000 V 3,500 V
Removing bubble pack from PCB 26,500 V 20,000 V 7,000 V
Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V
Service considerations 29
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.
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, screwdrivers, 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
Styrofoam.
●
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.
30 Chapter 4 Removal and replacement procedures preliminary requirements
Equipment guidelines
Grounding equipment must include either a wrist strap or a foot strap at a grounded workstation.
●
When seated, wear a wrist strap connected to a grounded system. Wrist straps are exible straps with a
minimum of one megohm ±10% resistance in the ground cords. To provide proper ground, wear a strap
snugly against the skin at all times. On grounded mats with banana-plug connectors, use alligator clips
to connect a wrist strap.
●
When standing, use foot straps and a grounded oor mat. Foot straps (heel, toe, or 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 foot straps on both feet with a minimum of one megohm resistance
between the operator and ground. To be
the skin.
The following grounding equipment is recommended to prevent electrostatic damage:
●
Antistatic tapes
●
Antistatic smocks, aprons, and sleeve protectors
●
Conductive bins and other assembly or soldering aids
●
Nonconductive foam
●
Conductive tabletop workstations with ground cords of one megohm resistance
●
Static-dissipative tables or oor mats with hard ties to the ground
eective, the conductive strips must be worn in contact with
●
Field service kits
●
Static awareness labels
●
Material-handling packages
●
Nonconductive plastic bags, tubes, or boxes
●
Metal tote boxes
●
Electrostatic voltage levels and protective materials
The following table lists the shielding protection provided by antistatic bags and oor mats.
Material Use Voltage protection level
Antistatic plastic Bags 1,500 V
Carbon-loaded plastic Floor mats 7,500 V
Metallized laminate Floor mats 5,000 V
Service considerations 31
5 Removal and replacement procedures for
Customer Self-Repair parts
CAUTION: The Customer Self-Repair program is not available in all locations. Installing a part not supported
by the Customer Self-Repair program may void your warranty. Check your warranty to determine if Customer
Self-Repair is supported in your location.
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then
follow the on-screen instructions.
Component replacement procedures
NOTE: Please read and follow the procedures described here to access and replace Customer Self-Repair
parts successfully.
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. See Labels on page 15 for details.
This chapter provides removal and replacement procedures for Customer Self-Repair parts.
There are as many as 14 screws that must be removed, replaced, or loosened when servicing Customer SelfRepair parts. Make special note of each screw size and location during removal and replacement.
Battery Safe mode
Before removing internal components, you must place the computer in “Battery Safe mode.” This mode
avoids short-circuits or system malfunction by removing power from internal components.
To place the computer in “Battery Safe mode,” follow these steps:
1. With the computer turned o and AC adapter connected, press the following key and button
combination: Windows key + Backspace key + Power button.
2. Turn the computer on to initiate “Battery Safe mode.”
3. After the computer powers o, disconnect the AC adapter.
In “Battery Safe mode,” the power button will not turn the computer on if the AC adapter is not connected.
To disengage “Battery Safe mode,” plug in the AC adapter and press the power button.
32 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
Service door
Description Spare part number
Hard Drive Hardware Kit (includes service door) 905771-001
Before removing the service door, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o or in Hibernation, turn the
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
Remove the service door:
1. Loosen the captive Phillips screw (1).
2. Lift the bottom of the door upward (2), and then remove the door from the computer (3).
computer on, and then shut it down through the operating system.
then unplugging the AC adapter from the computer.
Reverse these procedures to install the service door.
Component replacement procedures 33
Optical drive
Description Spare part number
Optical drive for use in HP ProBook 450 G4 models:
Blu-ray Disc R/RW with SuperMulti Drive 907719-001
DVD+/-RW Double-Layer SuperMulti Drive 907721-001
DVD-ROM Drive 907720-001
Optical drive for use in HP ProBook 455 G4 models:
DVD+/-RW Double-Layer SuperMulti Drive 907606-001
DVD-ROM Drive 907605-001
Optical drive bracket (included in the Plastics Kit) 905770-001
Before removing the optical drive, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the service door (see Service door on page 33).
Remove a optical drive:
1. Remove the Phillips PM2.5×3.0 screw (1) that secures the optical drive to the computer.
2. Insert a tool into the release slot and push the optical drive to disengage it (2).
34 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
3. Remove the optical drive from the computer (3).
4. If it is necessary to remove the bracket from the optical drive, remove the two Phillips PM2.5×3.0 screws
(1) that secure the bracket to the rear of the drive, and then remove the bracket from the drive (2).
Reverse these procedures to install a optical drive.
Component replacement procedures 35
Hard drive
Description Spare part number
Hard drive for use in all models:
2 TB, 5400 rpm, 9.5 mm 801808-001
1 TB, 5400 rpm, 7 mm 778192-001
500 GB, 7200 rpm, 7 mm 778189-001
Hard drive for use in HP ProBook 450 G4 models:
500 GB, 5400 rpm, 7 mm 778187-001
500 GB, 5400 rpm, 7 mm, hybrid (8-GB SSD) 732000-001
Hard drive for use in HP ProBook 455 G4 models:
500 GB, 7200 rpm, 7 mm 703267-001
500 GB, 5400 rpm, 7 mm 778186-001
Hard drive cover
NOTE: The hard drive cover is included in the Hard Drive Hardware Kit.
905771-001
Before removing the hard drive, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the service door (see Service door on page 33).
Remove the hard drive:
1. Remove the 2 Phillips PM2.0×3.0 screws (1) that secure the hard drive to the computer.
2. Pull the plastic tab to slide the hard drive (2) away from the center of the computer to disengage it from
the connector.
36 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
3. Lift the hard drive from the bay (3).
4. To remove the hard drive cover from the hard drive, remove the 4 Phillips PM3.0×3.0 screws (1) that
secure the bracket to the drive, and then lift the cover o the drive (2).
Reverse these procedures to install a hard drive.
Component replacement procedures 37
Memory modules
Description Spare part number
4-GB (PC4-17000) 862397-850
8-GB (PC4-17000) 862398-850
Update BIOS before adding memory modules
Before adding new memory, make sure you update the computer to the latest BIOS.
CAUTION: Failure to update the computer to the latest BIOS prior to installing new memory may result in
various system problems.
To update BIOS:
1. Navigate to www.hp.com.
2. Click Support & Drivers > click Drivers & Software.
3. In the Enter a product name/number box, type the computer model information, and then click Search.
4. Click the link for the computer model.
5. Select the operating system, and then click Next.
6. Under Step 2: Select a Download, click the BIOS link.
7. Click the link for the most recent BIOS.
8. Click the Download button, and then follow the on-screen instructions.
Before removing the memory module, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the service door (see Service door on page 33).
Remove the memory module:
1. Spread the retaining tabs (1) on each side of the memory module slot to release the memory module.
(The edge of the module opposite the slot rises away from the computer.)
38 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
2. Remove the memory module (2) by pulling the module away from the slot at an angle.
NOTE: Memory modules are designed with a notch to prevent incorrect insertion into the memory
module slot.
Reverse this procedure to install a memory module.
HP ProBook 455 G4 models: When installing memory modules, if only one module is installed, be sure to
install it in the memory slot toward the outside of the computer.
CAUTION: Failure to install a single memory module in the outside slot may prevent the computer from
booting up successfully.
Component replacement procedures 39
WLAN/Bluetooth combo card
The computer uses a card that provides both WLAN and Bluetooth functionality.
Description Spare part number
WLAN module for use in all models:
Realtek RTL8723BE-VB 802.11b/g/n 1x1 Wi-Fi + Bluetooth 4.0 combination WLAN adapter 843338-001
Intel Dual Band Wireless-AC 7265NV (non v-Pro) 802.11 ac 2×2 WiFi + Bluetooth 4.2 Combo Adapter 860883-001
WLAN module for use in HP ProBook 450 models:
Intel Dual Band Wireless-AC 3168 802.11ac, Dual Band, 1×1 Wi-Fi + Bluetooth 4.0 852511-001
Before removing the WLAN module, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the service door (see Service door on page 33).
Remove the WLAN module:
1. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE: The WLAN antenna cable labeled “1” connects to the WLAN module “Main” terminal labeled “1”.
The WLAN antenna cable labeled “2” connects to the WLAN module “Aux” terminal labeled “2”. If the
computer is equipped with an 802.11a/b/g/n WLAN module, the yellow WLAN antenna cable connects to
the middle terminal on the WLAN module.
2. Remove the Phillips PM2.0×4.0 screw (2) that secures the WLAN module to the computer. (The edge of
the module opposite the slot rises away from the computer.)
40 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
3. Remove the WLAN module (3) by pulling the module away from the slot at an angle.
NOTE: WLAN modules are designed with a notch to prevent incorrect insertion.
NOTE: If the WLAN antennas are not connected to the terminals on the WLAN module, the protective
sleeves must be installed on the antenna connectors, as shown in the following illustration.
Reverse this procedure to install the WLAN module.
Component replacement procedures 41
WWAN module
NOTE: The WWAN module and the WLAN module are not interchangeable.
Description Spare part number
Huawei HP It4132, LTE/HSPA+ w/GPS M.2 845710-001
Before removing the WWAN module, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the service door (see Service door on page 33).
Remove the WWAN module:
1. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module.
NOTE: The red WWAN antenna cable is connected to the WWAN module “Main” terminal. The blue
WWAN antenna cable is connected to the WWAN module “Aux” terminal.
2. Remove the Phillips PM2.0×3.0 screw (2) that secures the WWAN module to the system board.
42 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
3. Remove the WWAN module (3) by pulling the module away from the slot.
NOTE: WWAN modules are designed with a notch to prevent incorrect insertion.
NOTE: If the WWAN antennas are not connected to the terminals on the WWAN module, the protective
sleeves must be installed on the antenna connectors, as shown in the following illustration.
Reverse this procedure to install the WWAN module.
Component replacement procedures 43
M.2 solid-state drive
Description Spare part number
Solid-state drive for use in HP ProBook 450 G4 models (includes bracket):
256-GB 907722-001
128-GB 907723-001
Solid-state drive for use in HP ProBook 455 G4 models (includes bracket):
128-GB 907360-001
Before removing the solid-state drive, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the service door (see Service door on page 33).
Remove the solid-state drive:
1. Remove the Phillips PM2.0×4.0 screw (1) that secures the solid-state drive to the computer. (The edge
of the module opposite the slot rises away from the computer.)
2. Remove the solid-state drive (2) by pulling the module away from the slot at an angle.
Reverse this procedure to install the solid-state drive.
44 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
Keyboard
In this section, the rst table provides the main spare part number for the keyboards. The second table
provides the country codes.
Description Spare part number
Keyboard, no backlight 827028-xxx
Keyboard, backlit 827029-xxx
For use in country
or region
Belgium -A41 India -D61 Slovenia -BA1
Bulgaria -261 Israel -BB1 South Korea -AD1
Canada -DB1 Italy -061 Spain -071
Czech Republic
and Slovakia
Denmark, Finland, and
Norway
France -051 Northern Africa -FP1 Thailand -281
Germany -041 Portugal -131 Turkey -141
Greece -151 Russia -251 United Kingdom -031
Hungary -211 Saudi Arabia -171 United States -001
Iceland -DD1
Spare part
number
-FL1 Japan -291 Switzerland -BG1
-DH1 The Netherlands -B31 Taiwan -AB1
For use in country
or region
Spare part
number
For use in country
or region
Spare part
number
Before removing the keyboard, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the service door (see Service door on page 33).
Remove the keyboard:
1. Remove the 2 Phillips PM2.5×7.0 screws that secure the keyboard to the computer (1).
Component replacement procedures 45
2. Insert a tool into the access hole in the bottom of the computer (next to the hard drive bay) and push to
disengage the keyboard from the top cover (2).
3. Lift the top of the keyboard upward (1), and then rotate the keyboard until it rests on the palm rest (2).
NOTE: A cable (or cables) connect the bottom of the keyboard to the system board. Make sure not to
prematurely pull the cables out of the system board connector.
46 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
4. Disconnect the keyboard cable by lifting the connector latch (1), and then disconnect the keyboard cable
from the system board (2).
5. If applicable, disconnect the backlight cable by lifting the connector latch (3), and then disconnect the
cable from the system board (4).
6. Remove the keyboard (5).
Reverse this procedure to install the keyboard.
Component replacement procedures 47
6 Removal and replacement procedures for
Authorized Service Provider parts
CAUTION: Components described in this chapter should only be accessed by an authorized service provider.
Accessing these parts can damage the computer or void the warranty.
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then
follow the on-screen instructions.
Component replacement procedures
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. See Labels on page 15 for details.
This chapter provides removal and replacement procedures for Authorized Service Provider only parts.
There are as many as 55 screws that must be removed, replaced, or loosened when servicing Authorized
Service Provider only parts. Make special note of each screw size and location during removal and
replacement.
Display subcomponents (bezel, webcam, panel)
This section describes removing display subcomponents that do not require that you remove the entire
display assembly from the computer. You can remove the display bezel, webcam/microphone module, and
display panel while the display assembly is still attached to the computer.
To remove the remaining display subcomponents, you must remove the entire display assembly from the
computer. See Display assembly on page 82 for more information about removing the display assembly in
its entirety.
Description Spare part number
Raw display panel
FHD 809001-003
HD 860030-002
Display bezel
Models without a webcam 905757-001
Models with a webcam 905756-001
Models with a DVD-ROM drive 905766-001
Models with a DVD+/-RW Double-Layer SuperMulti drive 905767-001
Models with a Blu-ray Disc R/RW with SuperMulti drive 905768-001
Webcam/microphone module 805139-009
48 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
Before removing display subcomponents while the display assembly is still attached to the computer, follow
these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
Remove the display bezel, webcam/microphone module, and raw display panel:
1. Position the computer upright with the front toward you, and then open it.
2. Flex the inside of the top edge (1), left and right sides (2), and the inside of the bottom edge (3) of the
display bezel until the bezel disengages from the display enclosure.
3. Remove the display bezel (4).
4. To remove the webcam/microphone module:
a. Position the display assembly with the top edge toward you.
b. Lift to disengage the adhesive that secures the webcam/microphone module to the display (1).
Component replacement procedures 49
c. Disconnect the cable (2) from the module.
5. To remove the display panel:
a. Remove the 4 Phillips PM2.0×3.0 screws (1) that secure the display panel to the enclosure.
b. Rotate the display panel onto the keyboard (2) to gain access to the display cable connection on
the back of the panel.
c. On the back of the display panel, release the adhesive strip that secures the display panel cable to
the display panel (1), and then disconnect the cable (2).
50 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
d. Remove the display panel from the computer (3).
Reverse this procedure to reassemble and install the display bezel, webcam/microphone module, and display
panel.
Component replacement procedures 51
Top cover
NOTE: Top cover spare part kits include the touchpad assembly.
Before removing the top cover, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o or in Hibernation, turn the
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
5. Remove the following components:
Description Spare part number
Top cover (includes touchpad) 905765-001
computer on, and then shut it down through the operating system.
then unplugging the AC adapter from the computer.
a. Service door (see Service door on page 33).
b. Hard drive (Hard drive on page 36)
c. Optical drive (Optical drive on page 34)
d. Keyboard (see Keyboard on page 45)
Remove the top cover:
1. Position the computer upside-down with the front toward you.
2. Remove the 10 Torx T8 2.5×6.0 screws (1) that secure the top cover to the computer.
3. Remove the 4 Phillips PM2.0×3.0 screws (2) that secure the top cover to the computer.
4. Position the computer upright and open it as far as possible.
52 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
5. Remove the 6 Torx T8 2.5×6.0 screws that secure the top cover to the computer.
Component replacement procedures 53
6. Disconnect the following cables from the system board:
(1) Speaker cable
(2) Function board cable
(3) Power button board cable
(4) Touchpad board cable
(5) Fingerprint reader cable
(6) USB board
54 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
7. Rotate the bottom of the top cover upward (1), and then lift the top cover o the computer (2).
Reverse this procedure to install the top cover.
Component replacement procedures 55
Fingerprint reader assembly
Description Spare part number
Fingerprint reader assembly (includes cable) 905772-001
Fingerprint reader bracket (included in the Plastics Kit) 905770-001
Fingerprint reader insert (included in the Plastics Kit; for use in models without a ngerprint reader) 905770-001
Before removing the ngerprint reader assembly, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the following components:
a. Service door (see Service door on page 33).
b. Optical drive (Optical drive on page 34)
c. Hard drive (Hard drive on page 36)
d. Keyboard (see Keyboard on page 45)
e. Top cover (see Top cover on page 52)
Remove the ngerprint reader assembly:
1. Position the top cover upside-down.
2. Slide the bracket downward and lift it o the ngerprint reader board (1). To slide the bracket
downward, use a at tool and push at the top of the bracket to force it downward.
3. Remove the cable from the clips along the cable routing path in the top cover (2).
56 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
4. Lift the ngerprint reader cable to disengage the adhesive that secures it to the top cover (3), and then
remove the board and cable assembly from the top cover (4).
Reverse this procedure to install the ngerprint reader assembly.
Component replacement procedures 57
Power button board
Description Spare part number
Power button board assembly 905754-001
Power button board cable (included in Cable Kit) 905769-001
Before removing the power button board, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the following components:
a. Service door (see Service door on page 33)
b. Optical drive (Optical drive on page 34)
c. Hard drive (Hard drive on page 36)
d. Keyboard (see Keyboard on page 45)
e. Top cover (see Top cover on page 52)
Remove the power button board:
1. Position the top cover upside-down.
2. Disconnect the cable from the connector on the board (1).
3. Remove the Phillips PM2.0×3.0 screw (2) that secures the board to the top cover.
4. Lift the left side of the board (3), and then pull the board out and to the left to remove it from under the
tabs (4).
58 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
5. If you need to replace the cable, note the cable routing path through the top cover (5).
Reverse this procedure to install the power button board.
Component replacement procedures 59
Function board
Description Spare part number
Function board 905753-001
Function board cable (included in Cable Kit) 905769-001
Before removing the function board, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the following components:
a. Service door (see Service door on page 33)
b. Optical drive (Optical drive on page 34)
c. Hard drive (Hard drive on page 36)
d. Keyboard (see Keyboard on page 45)
e. Top cover (see Top cover on page 52)
Remove the function board:
1. Position the top cover upside-down.
2. Disconnect the cable from the connector on the function board (1).
3. Remove the Phillips PM2.0×3.0 screw (2) that secures the board to the top cover.
4. Lift the left side of the board (3), and then slide the board to the left to remove it from the top cover (4).
60 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
5. If you need to replace the function board cable, note how it is routed in the top cover (5).
Reverse this procedure to install the function board.
Component replacement procedures 61
Speaker assembly
Description Spare part number
Speaker assembly 905773-001
Before removing the speaker assembly, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the following components:
a. Service door (see Service door on page 33).
b. Optical drive (Optical drive on page 34)
c. Hard drive (Hard drive on page 36)
d. Keyboard (see Keyboard on page 45)
e. Top cover (see Top cover on page 52)
Remove the speaker assembly:
1. Position the top cover upside-down.
2. Remove the 2 Phillips PM2.0×3.0 screws (1) that secure the speaker assembly to the top cover.
3. Remove the cable from the clips in the top cover (2).
62 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
4. Remove the speakers from the top cover (3).
Reverse this procedure to install the speaker assembly.
Component replacement procedures 63
TouchPad assembly
Description Spare part number
TouchPad assembly
NOTE: The TouchPad is included in the Top Cover spare part kit.
TouchPad assembly cable (included in Cable Kit) 905769-001
not spared
Before removing the TouchPad assembly, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the following components:
a. Service door (see Service door on page 33).
b. Optical drive (Optical drive on page 34)
c. Hard drive (Hard drive on page 36)
d. Keyboard (see Keyboard on page 45)
e. Top cover (see Top cover on page 52)
Remove the TouchPad assembly:
NOTE: Before you remove the TouchPad assembly, make sure nothing (memory card or plastic insert) in
installed.
1. Position the top cover upside-down.
2. Disconnect the cable from the connector on the TouchPad (1).
3. Remove the 4 Phillips PM2.5×3.0 screws (2) that secure the TouchPad to the top cover.
4. Rotate the top of the TouchPad upward (3), and then pull the board toward the top of the top cover to
remove it (4).
64 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
5. If you need to replace the TouchPad assembly cable, note how it is routed in the top cover (5).
Reverse this procedure to install the TouchPad assembly.
Component replacement procedures 65
Battery
Description Spare part number
Battery, 4-cell, 48 WHr, 4.21 Ah 851610-855
Before removing the battery, follow these steps:
1. 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.
2. Place the computer in “Battery Safe mode” (Battery Safe mode on page 32).
3. Disconnect all external devices connected to the computer.
4. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
5. Remove the following components:
a. Service door (see Service door on page 33).
b. Optical drive (Optical drive on page 34)
c. Hard drive (Hard drive on page 36)
d. Keyboard (see Keyboard on page 45)
e. Top cover (see Top cover on page 52)
Remove the battery:
CAUTION: 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 and shut down the computer through Windows before
removing the battery.
1. Position the computer upright on a at surface.
66 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
2. Rotate the bottom of the battery upward (1), and then lift the battery out of the computer (2).
Reverse this procedure to install the battery.
Component replacement procedures 67
USB/audio board
Description Spare part number
USB/audio board 905755-001
USB/audio board cable (included in Cable Kit) 905769-001
Before removing the USB/audio board, follow these steps:
1. 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.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the following components:
a. Service door (see Service door on page 33).
b. Optical drive (Optical drive on page 34)
c. Hard drive (Hard drive on page 36)
d. Keyboard (see Keyboard on page 45)
e. Top cover (see Top cover on page 52)
f. Battery (see Battery on page 66)
Remove the USB/audio board:
1. Position the computer upright on a at surface.
2. Disconnect the cable from the board (1).
3. Remove the Phillips PM2.5×6.0 screw (2) that secures the board to the computer.
68 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
4. Lift the board out of the computer (3).
Reverse this procedure to install the USB/audio board.
Component replacement procedures 69
Fan
Description Spare part number
Fan 905774-001
NOTE: To properly ventilate the computer, allow at least 7.6 cm (3.0 in) of clearance on the left side of the
computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and
is designed to turn on automatically when high temperature conditions exist. These conditions are aected by
high external temperatures, system power consumption, power management/battery conservation
congurations, battery fast charging, and software requirements. Exhaust air is displaced through the
ventilation grill located on the left side of the computer.
Before removing the fan/heat sink assembly, follow these steps:
1. 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.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the battery (see Battery on page 66), and then remove the following components:
a. Service door (see Service door on page 33).
b. Hard drive (Hard drive on page 36)
c. Optical drive (Optical drive on page 34)
d. Keyboard (see Keyboard on page 45)
e. Top cover (see Top cover on page 52)
f. Battery (see Battery on page 66)
Remove the fan:
1. Position the computer upright on a at surface.
2. Disconnect the fan cable (1) from the system board.
3. Remove the cable from the clip on the side of the fan (2).
4. Remove the Phillips PM2.5×7.0 screw (3) that secures the fan to the computer.
70 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
5. Lift the fan from the computer (4).
Reverse this procedure to install the fan.
Component replacement procedures 71
Optical drive connector cable
Description Spare part number
Cable Kit 905769-001
Before removing the optical drive connector cable, follow these steps:
1. 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.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the following components:
a. Service door (see Service door on page 33).
b. Optical drive (Optical drive on page 34)
c. Hard drive (Hard drive on page 36)
d. Keyboard (see Keyboard on page 45)
e. Top cover (see Top cover on page 52)
f. Battery (see Battery on page 66)
Remove the optical drive connector cable:
1. Position the computer upright on a at surface.
2. Disconnect the optical drive connector cable from the system board (1).
3. Remove the cable from the clips built into the computer (2).
72 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
4. Remove the connector from the computer (3).
Reverse this procedure to install the optical drive connector cable.
Component replacement procedures 73
System board
NOTE: All system board spare part kits include replacement thermal material.
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating systems
xxxxxx-601: Windows 10 operating system
Description Spare part number
System board with processor for use in HP ProBook 450 G4 models:
Intel Core i7-7500U processor; 2-GB discrete graphics memory 907715-xxx
Intel Core i5-7200U processor; 2-GB discrete graphics memory 907714-xxx
Intel Core i3-7100U processor; 2-GB discrete graphics memory 907713-xxx
Intel Core i7-7500U processor; UMA graphics memory 907712-xxx
Intel Core i5-7200U processor; UMA graphics memory 907713-xxx
Intel Core i5-7200U processor; UMA graphics memory, WWAN models 907711-xxx
Intel Core i3-7100U processor; UMA graphics memory 907702-xxx
Intel Core i3-6006U processor; UMA graphics memory 913957-xxx
System board with processor for use in HP ProBook 455 G4 models:
AMD A10-9600P 907356-xxx
AMD A9-9410 907358-xxx
AMD A6-9210 907357-xxx
Before removing the system board, follow these steps:
1. 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.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the following components:
a. Service door (see Service door on page 33).
b. Hard drive (see Hard drive on page 36)
c. Optical drive (Optical drive on page 34)
d. Keyboard (see Keyboard on page 45)
e. Top cover (see Top cover on page 52)
f. Battery (see Battery on page 66)
When replacing the system board, be sure to remove the following components (as applicable) from the
defective system board and install on the replacement system board:
74 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
●
Memory modules (see Memory modules on page 38)
●
WLAN/Bluetooth module (see WLAN/Bluetooth combo card on page 40)
●
WWAN module (see WWAN module on page 42)
●
M.2 solid-state drive (see M.2 solid-state drive on page 44)
●
Heat sink (see Heat sink assembly on page 79)
Remove the system board:
1. Position the computer upright on a at surface.
2. Disconnect the following cables from the system board:
(1) Display cable
(2) Optical drive connector cable
3. Remove the 3 Phillips PM2.5×7.0 screws (1) that secure the system board to the computer.
4. Lift the bracket from atop the USB-Type C port (2).
5. Rotate the right side of the system board upward (3).
6. Disconnect the power connector cable from the bottom of the system board (4).
Component replacement procedures 75
7. Pull the system board away from the connectors on the side of the chassis to remove it from the
computer (5).
Reverse this procedure to install the system board.
76 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
RTC battery
Description Spare part number
RTC battery not spared
Before removing the RTC battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o or in Hibernation, turn the
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
4. Remove the following components:
computer on, and then shut it down through the operating system.
then unplugging the AC adapter from the computer.
a. Service door (see Service door on page 33).
b. Hard drive (see Hard drive on page 36)
c. Optical drive (Optical drive on page 34)
d. WLAN module (see WLAN/Bluetooth combo card on page 40)
e. WWAN module (see WWAN module on page 42)
f. Keyboard (see Keyboard on page 45)
g. Top cover (see Top cover on page 52)
h. Battery (see Battery on page 66)
i. System board (see System board on page 74)
Remove the RTC battery:
1. Position the system board upside-down.
2. Use a tool to pry the battery out of the socket (1).
Component replacement procedures 77
3. Remove the battery from the system board (2).
Reverse this procedure to install the RTC battery.
78 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
Heat sink assembly
All heat sink assembly spare part kits include replacement thermal material.
Description Spare part number
Heat sink for use in models with discrete graphics 907364-001
Heat sink for use in models with UMA graphics 907359-001
Before removing the heat sink assembly, follow these steps:
1. 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.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the following components:
a. Service door (see Service door on page 33).
b. Hard drive (see Hard drive on page 36)
c. Optical drive (Optical drive on page 34)
d. WLAN module (see WLAN/Bluetooth combo card on page 40)
e. WWAN module (see WWAN module on page 42)
f. Keyboard (see Keyboard on page 45)
g. Top cover (see Top cover on page 52)
h. Battery (see Battery on page 66)
i. System board (see System board on page 74)
Remove the heat sink assembly:
1. Position the system board upside-down.
2. Discrete models: In the order indicated on the heat sink, loosen the 6 captive Phillips screws (1)–(6)
that secure the heat sink to the system board.
Component replacement procedures 79
3. Lift the heat sink from the system board (7).
NOTE: Thoroughly clean thermal material from the surfaces of the system board components (1)(3)
and the heat sink (2)(4) each time you remove the heat sink. All heat sink and processor spare part kits
include thermal material.
4. UMA models: In the order indicated on the heat sink, loosen the 4 captive Phillips screws (1)–(4) that
secure the heat sink to the system board.
80 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
5. Lift the heat sink from the system board (5).
NOTE: Thoroughly clean thermal material from the surfaces of the system board components (1) and
the heat sink (2) each time you remove the heat sink. All heat sink and processor spare part kits include
thermal material.
Reverse this procedure to install the heat sink assembly.
Component replacement procedures 81
Display assembly
Description Spare part number
Display panel assembly, touch; models without WWAN
Touch display are only spared as entire hinge-ups. Individual components are not spared.
Non-touch displays are ONLY spared at the subcomponent level. For more information about display
components, see Display components on page 21.
Display panel assembly, touch; models with WWAN 907725-001
907724-001
This section describes removing components that require you to completely remove the display panel. For
more information about removing display components that do not require that you remove the assembly
from the computer, see Display subcomponents (bezel, webcam, panel) on page 48.
Before removing the display assembly, follow these steps:
1. 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.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the following components:
a. Service door (see Service door on page 33).
b. Hard drive (see Hard drive on page 36)
c. Optical drive (Optical drive on page 34)
d. WLAN module (see WLAN/Bluetooth combo card on page 40)
e. WWAN module (see WWAN module on page 42)
f. Keyboard (see Keyboard on page 45)
g. Top cover (see Top cover on page 52)
h. Battery (see Battery on page 66)
Remove the display assembly:
1. Position the computer upright on a at surface.
2. Disconnect the display cable from the system board (1).
3. Pull the wireless antennas through the hole in the computer (2), as applicable to your model.
4. Lift the conductive tape from atop the power connector cable and display hinge (3).
NOTE: When installing the display, be sure to replace the conductive tape atop the display hinge and
power connector cable. This tape is required to properly regulate electrostatic discharge.
5. Remove the 4 Phillips PM2.5×7.0 screws (4) from the display hinges.
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6. Lift the display assembly straight up and remove it (5).
CAUTION: When installing the display assembly, be sure that the wireless antenna cables are routed
and arranged properly. Failure to properly route the antennas can result in degradation of the
computer's wireless performance.
7. Flex the top (1) of the bezel, the inside edges of the left and right sides (2), and then the bottom (3) of
the bezel until it disengages from the display enclosure.
Component replacement procedures 83
8. Remove the display bezel (4).
The display bezel is available using the following spare part numbers:
905757-001: Models without a webcam
905756-001: Models with a webcam
905766-001: Models with a DVD-ROM drive
905767-001: Models with a DVD+/-RW Double-Layer SuperMulti drive
905768-001: Models with a Blu-ray Disc R/RW with SuperMulti drive
NOTE: The display will not be connected to the computer as shown in the following image.
84 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
9. If it is necessary to replace the webcam or microphone module, gently pull the module away from the
double-sided tape on the display enclosure (1), and then disconnect the cable from the module (2).
The webcam module is available using spare part number 805139-009.
10. If it is necessary to remove or replace the display panel, remove the 4 Phillips PM2.0×3.0 screws (1) that
secure the display panel to the enclosure.
11. Rotate the display panel onto the keyboard (2) to gain access to the display cable connection on the
back of the panel.
Component replacement procedures 85
12. On the back of the display panel, release the adhesive strip that secures the display panel cable to the
display panel (1), and then disconnect the cable (2).
13. Remove the display panel from the display enclosure (3).
Raw display panels are available using spare part number 860030-002 for HD panels and 809001-003
for FHD panels.
14. If it is necessary to remove or replace the hinge covers, remove the 2 Phillips PM2.0×3.0 screws (1) that
secure the hinge covers to the display enclosure.
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15. Remove the hinge covers from the display hinges (2).
Display hinge covers are available using spare part number 905763-001.
16. If it is necessary to remove or replace the display hinges, remove the 6 Phillips PM2.5×2.5 screws (1)
that secure both display hinges to the display enclosure.
17. Remove the display hinges from the display enclosure (2).
Display hinges are available in the Display Hinge Kit using spare part number 905762-001.
18. If it is necessary to replace the display/webcam cable, remove the webcam cable from the clips in the
display enclosure (1), and the clips at the bottom of the display enclosure (2).
Component replacement procedures 87
19. Remove the cable from the display enclosure (3).
The display/webcam cable is available using spare part number 905760-001 for models with WLAN and
905761-001 for models with WWAN.
The display enclosure is available using spare part number 905758-001 for WLAN models and
905759-001 for WWAN models..
Reverse this procedure to reassemble and install the display assembly.
88 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
Power connector and cable
Description Spare part number
Power connector and cable 828949-007
Conductive fabric (for use with the power connector cable) 914604-001
Before removing the power cable, follow these steps:
1. 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.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the following components:
a. Service door (see Service door on page 33).
b. Optical drive (Optical drive on page 34)
c. WLAN module (see WLAN/Bluetooth combo card on page 40)
d. WWAN module (see WWAN module on page 42)
e. Hard drive (Hard drive on page 36)
f. Keyboard (see Keyboard on page 45)
g. Top cover (see Top cover on page 52)
h. Battery (see Battery on page 66)
i. Display assembly (see Display assembly on page 82)
Remove the power cable:
1. Remove the cable from the clips in the computer (1).
Component replacement procedures 89
2. Remove the power cable from the computer (2).
Reverse this procedure to install the power cable.
90 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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