HP EliteBook 725 G4 Manual

HP EliteBook 725 G4 Notebook PC
Maintenance and Service Guide

© Copyright 2016 HP Development Company,
L.P.
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and/or other countries. Qualcomm is a
trademark of Qualcomm Incorporated,
registered in the United States and other
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For DTS patents, see http://patents.dts.com.
Manufactured under license from DTS
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the Symbol together are registered
trademarks, and DTS Studio Sound is a
trademark of DTS, Inc. © DTS, Inc. All Rights
Reserved .
Product notice
This guide describes features that are common
to most models. Some features may not be
available on your computer.
Not all features are available in all editions of
Windows 10 or Windows 8. This computer may
require upgraded and/or separately purchased
hardware, drivers and/or software to take full
advantage of Windows 10 or Windows 8
functionality. See http://www.microsoft.com
for details.
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: December 2016
Document Part Number: 902318-001

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 device, do not place
the device directly on your lap or obstruct the device air vents. Use the device only on a hard, at surface. Do
not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs
or clothing, to block airow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as
pillows or rugs or clothing, during operation. The device and the AC adapter comply with the user-accessible
surface temperature limits dened 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 External component identication .................................................................................................................. 6
Right ....................................................................................................................................................................... 6
Left ......................................................................................................................................................................... 8
Display .................................................................................................................................................................... 9
Top ........................................................................................................................................................................ 10
TouchPad ........................................................................................................................................... 10
Lights ................................................................................................................................................. 11
Button, speakers, and ngerprint reader ......................................................................................... 12
Keys ................................................................................................................................................... 13
Bottom ................................................................................................................................................................. 14
Front ..................................................................................................................................................................... 15
3 Illustrated parts catalog .............................................................................................................................. 16
Service label ......................................................................................................................................................... 16
Computer major components .............................................................................................................................. 17
Display assembly subcomponents ...................................................................................................................... 22
Plastics Kit ........................................................................................................................................................... 23
Cable Kit ............................................................................................................................................................... 24
Mass storage devices ........................................................................................................................................... 25
Miscellaneous parts ............................................................................................................................................. 26
4 Removal and replacement procedures preliminary requirements .................................................................... 28
Tools required ...................................................................................................................................................... 28
Service considerations ......................................................................................................................................... 28
Plastic parts ....................................................................................................................................... 28
Cables and connectors ...................................................................................................................... 29
Drive handling ................................................................................................................................... 29
Grounding guidelines ........................................................................................................................................... 30
Electrostatic discharge damage ........................................................................................................ 30
Packaging and transporting guidelines .......................................................................... 31
Workstation guidelines ................................................................................................... 31
Equipment guidelines ..................................................................................................... 32
vii

5 Removal and replacement procedures for Customer Self-Repair parts ............................................................. 33
Component replacement procedures .................................................................................................................. 33
Bottom cover ..................................................................................................................................... 33
Battery ............................................................................................................................................... 36
Hard drive .......................................................................................................................................... 37
Solid-state drive ................................................................................................................................ 38
Memory modules ............................................................................................................................... 40
WLAN module .................................................................................................................................... 42
WWAN module ................................................................................................................................... 44
Keyboard ........................................................................................................................................... 46
6 Removal and replacement procedures for Authorized Service Provider parts ................................................... 49
Component replacement procedures .................................................................................................................. 49
System board .................................................................................................................................... 49
RTC battery ........................................................................................................................................ 52
Heat sink/fan assembly .................................................................................................................... 53
Fingerprint reader assembly ............................................................................................................. 55
TouchPad button board ..................................................................................................................... 56
NFC module ....................................................................................................................................... 57
Smart card reader board ................................................................................................................... 58
Speaker assembly ............................................................................................................................. 59
Display assembly ............................................................................................................................... 59
7 Computer Setup (BIOS), TPM, and HP Sure Start in Windows 10 ........................................................................ 66
Using Computer Setup ......................................................................................................................................... 66
Starting Computer Setup .................................................................................................................. 66
Navigating and selecting in Computer Setup ................................................................................... 66
Restoring factory settings in Computer Setup ................................................................................. 67
Updating the BIOS ............................................................................................................................. 68
Determining the BIOS version ......................................................................................... 68
Downloading a BIOS update ........................................................................................... 68
Changing the boot order using the f9 prompt .................................................................................. 69
TPM BIOS settings (select products only) ........................................................................................................... 69
Using HP Sure Start (select products only) ......................................................................................................... 70
8 HP PC Hardware Diagnostics (UEFI) ............................................................................................................... 71
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................... 71
9 Backing up and recovering Windows 10 ......................................................................................................... 73
Creating recovery media and backups ................................................................................................................ 73
viii

Creating HP Recovery media (select products only) ......................................................................... 73
Using Windows tools ........................................................................................................................................... 74
Restore and recovery ........................................................................................................................................... 75
Recovering using HP Recovery Manager ........................................................................................... 75
What you need to know before you get started ............................................................. 75
Using the HP Recovery partition (select products only) ................................................. 76
Using HP Recovery media to recover .............................................................................. 76
Changing the computer boot order ................................................................................ 77
Removing the HP Recovery partition (select products only) ......................................... 78
10 Specications ............................................................................................................................................ 79
Input power .......................................................................................................................................................... 79
Operating environment ....................................................................................................................................... 79
11 Power cord set requirements ...................................................................................................................... 80
Requirements for all countries ............................................................................................................................ 80
Requirements for specic countries and regions ................................................................................................ 80
12 Statement of memory volatility .................................................................................................................. 82
Nonvolatile memory usage ................................................................................................................................. 84
Questions and answers ....................................................................................................................................... 86
Using HP Sure Start (select models only) ............................................................................................................ 87
13 Recycling .................................................................................................................................................. 88
Index ............................................................................................................................................................. 89
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