HP ProOne 400 23.8-inch G4 All-in-One Business PC - Page 54

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8. Pull the power button board cable through the hole in the chassis (2).

9. Remove the power button board from the computer.

To install the power button board, reverse the removal procedures.

46 Chapter 4 Removal and Replacement Procedures

Main Page

Table of Contents5
Product Features9
Overview9
HP Proone 400 23.8-Inch Components10
Front Components10
Side Components10
Rear Components11
Bottom Components11
HP Proone 400 20-Inch Components12
Front Components12
Side Components12
Rear Components13
Bottom Components13
Labels14
Illustrated Parts Catalog16
System Parts16
Mass Storage Devices19
Processors and Memory Modules20
Keyboards and Mice20
Routine Care, SATA Drive Guidelines, and Disassembly Preparation22
Electrostatic Discharge Information22
Generating Static22
Preventing Electrostatic Damage to Equipment23
Personal Grounding Methods and Equipment23
Grounding the Work Area23
Recommended Materials and Equipment24
Operating Guidelines24
Routine Care25
General Cleaning Safety Precautions25
Cleaning the Computer Case25
Cleaning the Keyboard25
Cleaning the Display26
Cleaning the Mouse26
Service Considerations26
Tools and Software Requirements26
Screws26
Cables and Connectors26
Hard Drives27
Lithium Coin Cell Battery27
SATA Hard Drive Cables28
SATA Data Cable28
Cable Management28
Removal and Replacement Procedures29
Preparing to Disassemble the Computer29
Stand29
VESA Bracket30
Rear Port Cover31
Locating Internal Components under the Rear Port Cover31
Hard Drive32
Optical Drive34
M.2 Solid-State Drive36
Memory37
Battery39
WLAN Module40
Option Board41
Hood Sensor42
Fan Assembly43
Heat Sink44
Processor46
System Board47
System Board Callouts49
Speakers50
23.8-Models50
20-Models51
Power Button Board53
Rear Enclosure and Display Assembly55
Rear Enclosure and Display Assembly in 23.8-Inch Models55
Display Panel in 20-Inch Models58
Webcam62
23.8-Inch Models62
20-Inch Models65
Antennas in 23.8-Inch Models66
Computer Setup (F10) Utility67
Computer Setup (F10) Utilities67
Using Computer Setup (F10) Utilities67
Computer Setup-Main69
Computer Setup-Security71
Computer Setup-Advanced75
Recovering the Configuration Settings80
Using HP PC Hardware Diagnostics81
Using HP PC Hardware Diagnostics Windows (Select Products Only)81
Downloading HP PC Hardware Diagnostics Windows81
Downloading the Latest HP PC Hardware Diagnostics Windows Version82
Downloading HP Hardware Diagnostics Windows by Product Name or Number (Select Products Only)82
Installing HP PC Hardware Diagnostics Windows82
Using HP PC Hardware Diagnostics UEFI82
Starting HP PC Hardware Diagnostics UEFI83
Downloading HP PC Hardware Diagnostics UEFI to a USB Flash Drive83
Downloading the Latest HP PC Hardware Diagnostics UEFI Version83
Downloading HP PC Hardware Diagnostics UEFI by Product Name or Number (Select Products Only)83
Using Remote HP PC Hardware Diagnostics UEFI Settings (Select Products Only)84
Downloading Remote HP PC Hardware Diagnostics UEFI84
Downloading the Latest Remote HP PC Hardware Diagnostics UEFI Version84
Downloading Remote HP PC Hardware Diagnostics UEFI by Product Name or Number84
Customizing Remote HP PC Hardware Diagnostics UEFI Settings84
Troubleshooting Without Diagnostics86
Safety and Comfort86
Before You Call for Technical Support86
Helpful Hints87
Solving General Problems88
Solving Power Problems91
Solving Hard Drive Problems92
Solving Audio Problems94
Solving Printer Problems95
Solving Keyboard and Mouse Problems96
Solving Hardware Installation Problems97
Solving Network Problems98
Solving Memory Problems100
Solving USB Flash Drive Problems102
Solving Internet Access Problems102
Solving Software Problems103
Backing Up, Restoring, and Recovering105
Using Windows Tools105
Creating HP Recovery Media (Select Products Only)105
Using HP Recovery Manager to Create Recovery Media106
Before You Begin106
Creating the Recovery Media106
Using the HP Cloud Recovery Download Tool to Create Recovery Media107
Restoring and Recovery107
Restoring, Resetting, and Refreshing Using Windows Tools107
Restoring Using HP Recovery Manager and the HP Recovery Partition107
Recovering Using HP Recovery Manager107
Recovering Using the HP Recovery Partition (Select Products Only)108
Recovering Using HP Recovery Media108
Changing the Computer Boot Order109
Removing the HP Recovery Partition (Select Products Only)109
POST Error Messages and Diagnostic Front Panel Leds and Audible Codes110
POST Numeric Codes and Text Messages110
Interpreting System Validation Diagnostic Front Panel Leds and Audible Codes115
10 Password Security and Resetting CMOS117
Resetting the Password Jumper117
Clearing and Resetting the BIOS119
Appendix A Power Cord Set Requirements120
General Requirements120
Japanese Power Cord Requirements120
Country-Specific Requirements121
Appendix B Statement of Memory Volatility122
Nonvolatile Memory Usage124
Questions and Answers126
Using HP Sure Start (Select Models Only)127
Appendix C Specifications128
Index129

HP ProOne 400 23.8-inch G4 All-in-One Business PC - Page 54

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