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HP EliteDesk 800 G8 Maintenance and Service Guide - Page 15

Computer major components and their descriptions continued, Table 2-1

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Table 2-1 Computer major components and their descriptions (continued) Item Description (4) WLAN module Intel® Wi-Fi 6 AX201 (2 × 2) and Bluetooth® M.2 Combo Card, non-vPro™ Intel Wi-Fi 6 AX201 (2 × 2) and Bluetooth M.2 Combo Card, vPro Realtek RTL8822CE Wi-Fi 5 (2 × 2) and Bluetooth M.2 Combo Card (5) Option board USB Type-C (2) USB Type-A ports Thunderbolt® DisplayPort Serial port VGA port (6) Expansion cards NVIDIA® Quadro® P620 NVIDIA Quadro P400 AMD® Radeon™ RX550 NIC, Intel PRO/1000 Single Port GbE Parallel port Serial port + PS/2 (7) Power supply 260 W, EPA92, 12 V 350 W, EPA92, 12 V (8) System chassis (9) Fan duct (10) Heat sink Solid-state drive heat sink (not illustrated) (11) Memory modules (UDIMM, PC-4-3200) 32 GB 16 GB 8 GB 4 GB (12) System board (includes replacement thermal material) (13) Front bezel Bezel blank, optical drive (not illustrated) Computer major components 7

Section	Page
Computer features	9
Standard configuration features	9
Front panel components	9
Rear panel components	10
Serial number location	11
Changing from desktop to tower orientation	12
Illustrated parts catalog	14
Computer major components	14
Mass storage devices	16
Miscellaneous parts	17
Routine care, SATA drive guidelines, and disassembly preparation	20
Electrostatic discharge information	20
Generating static electricity	20
Preventing electrostatic damage to equipment	21
Personal grounding methods and equipment	21
Grounding the work area	22
Recommended materials and equipment	22
Operating guidelines	22
Routine care	23
General cleaning safety precautions	23
Removing dirt and debris from your computer	23
Cleaning your computer with a disinfectant	24
Cleaning the computer case	25
Cleaning the keyboard	25
Cleaning the monitor	26
Cleaning the mouse	26
Service considerations	26
Tools and software requirements	26
Screws	26
Cables and connectors	26
Hard drives	27
Lithium coin cell battery	27
SATA hard drives	27
Cable management	28
Removal and replacement procedures	29
Preparation for disassembly	29
Access panel	29
Front bezel	30
Removing bezel blanks	31
Drive cage	31
Memory modules (DIMMs)	32
Drives	34
Drive positions	34
Removing and installing drives	35
Optical drive	35
Removing the primary 3.5 inch hard drive	37
Removing a secondary 3.5 inch hard drive	38
Options for installing a 3.5 inch hard drive	39
Solid-state drive	40
Expansion card	41
WLAN module	44
Battery	45
Air duct	46
Serial port	47
Hood lock	48
Hood sensor	48
Option board	49
Heat sink	50
Processor	51
Card reader	52
Speaker	53
Power supply	54
System board	55
System board connections	56
Wireless antennas and cables	57
Troubleshooting without diagnostics	59
Before you call for technical support	59
Helpful hints	60
Solving general problems	60
Cannot access the Computer Setup (F10) Utility when booting the computer	60
Computer appears locked up and will not turn off when the power button is pressed	61
Computer will not respond to keyboard or mouse	61
Computer date and time display is incorrect	61
There is no sound or sound volume is too low	61
Cannot remove computer cover or access panel	62
Poor performance	62
Computer powered off automatically and the power light blinks red four times and then white two time ...	63
System does not turn on and the lights on the front of the computer are not blinking	63
Solving power problems	64
Power supply shuts down intermittently	64
Computer turned off automatically, power light blinks red two times followed by a two-second pause, ...	64
Power light blinks red four times followed by a two-second pause and the computer beeps four times ( ...	64
Solving hard drive problems	65
Hard drive error occurs	65
Disk transaction problem	65
Drive not found (identified)	65
Nonsystem disk/NTLDR missing message	66
Computer will not boot from hard drive	66
Computer seems to be locked up	67
Solving audio problems	67
Sound cuts in and out	67
Sound does not come out of the speaker or headphones	67
Computer appears to be locked up while recording audio	68
Line-in jack is not functioning properly	68
Solving printer problems	68
Printer will not print	68
Printer will not turn on	69
Printer prints garbled information	69
Printer will not print	69
Solving keyboard and mouse problems	69
Keyboard commands and typing are not recognized by the computer	69
Mouse does not respond to movement or is too slow	70
Solving hardware installation problems	70
A new device is not recognized as part of the system	71
Computer will not start	71
Power light blinks red three times and then white two times	71
Solving network problems	72
Network driver does not detect network controller	72
Network status link light never blinks	72
Diagnostics reports a failure	73
Diagnostics passes, but the computer does not communicate with the network	73
Network controller stopped working when an expansion board was added to the computer	73
Network controller stops working without apparent cause	73
Cannot connect to network server when attempting remote system installation	74
System setup utility reports unprogrammed EEPROM	74
Solving memory problems	74
System will not boot or does not function properly after installing additional memory modules	74
Out of memory error	75
Memory count during POST is wrong	75
Insufficient memory error during operation.	75
Power light blinks red five times followed by a two-second pause and the computer beeps five times ( ...	75
Solving USB flash drive problems	76
USB flash drive is not seen as a drive letter in Windows	76
USB flash drive not found (identified)	76
System will not boot from USB flash drive	76
The computer boots to DOS after making a bootable flash drive	76
Solving internet access problems	77
Unable to connect to the internet	77
Cannot automatically launch internet programs	77
Solving software problems	77
Computer will not start up and the HP logo does not appear	78
“Illegal Operation has Occurred” error message is displayed	78
Computer Setup (F10) Utility	79
Using Computer Setup (F10) Utilities	79
Computer Setup Main	80
Computer Setup Security	83
Computer Setup Advanced	87
POST error messages	95
POST numeric codes and text messages	95
Interpreting POST diagnostic front panel lights and audible codes	100
Password security and resetting CMOS	103
Changing a setup or power-on password	103
Deleting a setup or power-on password	103
Backing up, restoring, and recovering	105
Backing up information and creating recovery media	105
Using Windows tools for backing up	105
Using the HP Cloud Recovery Download Tool to create recovery media (select products only)	105
Restoring and recovering your system	105
Creating a system restore	106
Restoring and recovery methods	106
Recovering using HP Recovery media	106
Changing the computer boot order	106
Using HP Sure Recover (select products only)	107
Using HP PC Hardware Diagnostics	108
Using HP PC Hardware Diagnostics Windows (select products only)	108
Using an HP PC Hardware Diagnostics Windows hardware failure ID code	108
Accessing HP PC Hardware Diagnostics Windows	108
Accessing HP PC Hardware Diagnostics Windows from HP Help and Support (select products only)	108
Accessing HP PC Hardware Diagnostics Windows from Support Assistant	109
Accessing HP PC Hardware Diagnostics Windows from the Start menu (select products only)	109
Downloading HP PC Hardware Diagnostics Windows	109
Downloading the latest HP PC Hardware Diagnostics Windows version from HP	109
Downloading the HP PC Hardware Diagnostics Windows from the Microsoft Store	109
Downloading HP Hardware Diagnostics Windows by product name or number (select products only)	110
Installing HP PC Hardware Diagnostics Windows	110
Using HP PC Hardware Diagnostics UEFI	110
Using an HP PC Hardware Diagnostics UEFI hardware failure ID code	110
Starting HP PC Hardware Diagnostics UEFI	111
Downloading HP PC Hardware Diagnostics UEFI to a USB flash drive	111
Downloading the latest HP PC Hardware Diagnostics UEFI version	111
Downloading HP PC Hardware Diagnostics UEFI by product name or number (select products only)	111
Using Remote HP PC Hardware Diagnostics UEFI settings (select products only)	112
Downloading Remote HP PC Hardware Diagnostics UEFI	112
Downloading the latest Remote HP PC Hardware Diagnostics UEFI version	112
Downloading Remote HP PC Hardware Diagnostics UEFI by product name or number	112
Customizing Remote HP PC Hardware Diagnostics UEFI settings	112
Statement of memory volatility	114
Current BIOS steps	114
Nonvolatile memory usage	116
Questions and answers	118
Using HP Sure Start (select products only)	119
Power cord set requirements	120
General requirements	120
Japanese power cord requirements	120
Country-specific requirements	120
Specifications	122