HP 255 G7 Maintenance And Service Manual page 8

5 Removal and replacement procedures for Customer Self-Repair parts ............................................................. 27
Preparation for disassembly ............................................................................................................................... 27
Component replacement procedures .................................................................................................................. 27
6 Removal and replacement procedures for Authorized Service Provider parts ................................................... 30
Component replacement procedures .................................................................................................................. 30
7 Computer Setup (BIOS), TPM, and HP Sure Start ............................................................................................. 67
Using Computer Setup ......................................................................................................................................... 67
TPM BIOS settings (select products only) ........................................................................................................... 69
Using HP Sure Start (select products only) ......................................................................................................... 70
8 Using HP PC Hardware Diagnostics ................................................................................................................ 71
Using HP PC Hardware Diagnostics Windows (select products only) ................................................................. 71
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Optical drive ....................................................................................................................................... 28
Bottom cover ..................................................................................................................................... 31
Battery ............................................................................................................................................... 33
Memory .............................................................................................................................................. 35
Hard drive .......................................................................................................................................... 37
Solid-state drive ................................................................................................................................ 39
Solid-state drive bracket and connector board ................................................................................ 40
WLAN module .................................................................................................................................... 42
Hard drive connector board ............................................................................................................... 43
USB/card reader board ...................................................................................................................... 44
TouchPad button board ..................................................................................................................... 45
TouchPad module .............................................................................................................................. 46
Fan ..................................................................................................................................................... 48
Heat sink assembly ........................................................................................................................... 49
Display assembly ............................................................................................................................... 53
System board .................................................................................................................................... 62
Speakers ............................................................................................................................................ 64
Power connector cable (DC-in) .......................................................................................................... 65
Top cover with keyboard ................................................................................................................... 66
Starting Computer Setup .................................................................................................................. 67
Navigating and selecting in Computer Setup ................................................................................... 67
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