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HP EliteDesk 800 Maintenance and Service Guide - HP EliteDesk 800 G1 Tower, HP - Page 101

Power supply, Disconnect the power cables from the following system board connectors:.

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Power supply Description Power supply, 320W, 92% efficient Power supply, 320W, 90% efficient Power supply, 320W Power supply, HV, 320W Spare part number 702452-001 702453-001 702454-001 707906-001 1. Prepare the computer for disassembly (Preparation for disassembly on page 44). 2. Remove the access panel (Access panel on page 45). 3. Disconnect the power cables from the following system board connectors:. ● PWR ● PWRCPU ● PWRCMD Power supply 89

Section	Page
Product features	13
Standard configuration features	13
Tower (TWR)	13
Small Form Factor (SFF)	14
Ultra-slim Desktop (USDT)	14
Tower (TWR) front panel components	15
Small Form Factor (SFF) front panel components	16
Ultra-slim Desktop (USDT) front panel components	17
Tower (TWR) rear panel components	18
Small Form Factor (SFF) rear panel components	19
Ultra-slim Desktop (USDT) rear panel components	20
Serial number location	20
Tower (TWR)	21
Small Form Factor (SFF)	21
Ultra-slim Desktop (USDT)	22
Activating and Customizing the Software	23
Activating and customizing the software in Windows 7	23
Activating the Windows operating system	23
Downloading Windows 7 updates	24
Installing or upgrading device drivers	24
Customizing the monitor display	24
Activating and customizing the software in Windows 8	24
Activating the Windows Operating System	24
Downloading Windows 8 updates	25
Customizing the monitor display	25
Illustrated parts catalog	26
Tower (TWR) chassis spare parts	26
Computer major components	26
Cables	28
Misc parts	29
Drives	30
Misc boards	31
Sequential part number listing	31
Small Form Factor (SFF) chassis spare parts	34
Computer major components	34
Cables	35
Misc parts	36
Drives	37
Misc boards	37
Sequential part number listing	38
Ultra-Slim Desktop (USDT) chassis spare parts	41
Computer major components	41
Cables	42
Misc parts	43
Drives	44
Misc boards	45
Sequential part number listing	45
Routine care, SATA drive guidelines, and disassembly preparation	47
Electrostatic discharge information	47
Generating static	48
Preventing electrostatic damage to equipment	48
Personal grounding methods and equipment	49
Grounding the work area	49
Recommended materials and equipment	49
Operating guidelines	50
Routine care	51
General cleaning safety precautions	51
Cleaning the Computer Case	51
Cleaning the keyboard	51
Cleaning the monitor	52
Cleaning the mouse	52
Service considerations	52
Power supply fan	52
Tools and software Requirements	53
Screws	53
Cables and connectors	53
Hard Drives	53
Lithium coin cell battery	54
SATA hard drives	54
SATA hard drive cables	55
SATA data cable	55
SMART ATA drives	55
Cable management	55
Removal and replacement procedures: Tower (TWR)	56
Preparation for disassembly	56
Access panel	57
Front bezel security	58
Front bezel	59
Bezel blanks	60
Memory	62
DIMMs	62
DDR3-SDRAM DIMMs	62
Populating DIMM sockets	62
Installing DIMMs	63
Expansion cards	65
System board connections	69
Drives	71
Drive positions	73
Removing a 5.25-inch drive	74
Installing a 5.25-inch drive	74
Removing a 3.5-inch device	76
Installing a 3.5-inch device	78
Removing a slim optical drive	79
Installing a slim optical drive	80
Removing a 3.5-inch or 2.5-inch hard drive	82
Installing a 3.5-inch or 2.5-inch hard drive	83
Front I/O assembly	88
Power switch/LED assembly	89
Fan sink	91
Processor	93
Speaker	94
Smart Cover Lock (solenoid lock)	95
Hood sensor	98
Fan	99
Power supply	101
System board and PCI expansion slot daughter card	104
Removal and replacement procedures: Small Form Factor (SFF)	106
Preparation for disassembly	106
Access panel	107
Front bezel	108
Front bezel security	109
Bezel blanks	111
Memory	112
DIMMs	112
DDR3-SDRAM DIMMs	112
Populating DIMM sockets	112
Installing DIMMs	113
Expansion card	115
System board connections	119
Drives	120
Drive positions	122
Removing a 3.5-inch device	123
Installing a 3.5-inch device	124
Removing a slim optical drive	126
Installing a slim optical drive	127
Removing and replacing a 3.5-inch hard drive	128
Removing a 2.5-inch hard drive	131
Installing a 2.5-inch hard drive	131
Power supply	133
Fan duct	136
Smart Cover Lock (solenoid lock)	137
Hood sensor	140
Cable routing	141
Front I/O assembly	142
Power switch assembly	144
Speaker	146
Fan sink	147
Processor	148
System board	150
Changing from desktop to tower configuration	152
Removal and replacement procedures: Ultra-slim Desktop (USDT)	153
Preparation for disassembly	153
Access panel	154
Front bezel	155
Front bezel security	156
Bezel blank	157
System board connections	158
Memory	159
SODIMMs	159
DDR3-SDRAM SODIMMs	159
Populating SODIMM sockets	160
Installing SODIMMs	161
Front fan	162
Optical drive	163
Removing the optical drive	163
Preparing the new optical drive	164
Installing the new optical drive	165
Hard drive	166
Speaker	168
Heat sink	169
Processor	171
Smart Cover Lock (solenoid lock)	172
Drive cage	176
Hood sensor	177
Card reader	178
WLAN module	180
Graphics board	181
Power switch	182
System board	183
Rear fan	185
Antennas	186
Changing from desktop to tower configuration	190
Port cover	191
Power supply, external	191
Computer Setup (F10) Utility	192
Computer Setup (F10) Utilities	192
Using Computer Setup (F10) Utilities	193
Computer Setup—File	194
Computer Setup—Storage	195
Computer Setup—Security	198
Computer Setup—Power	203
Computer Setup—Advanced	205
Recovering the Configuration Settings	207
Troubleshooting without diagnostics	208
Safety and comfort	208
Before you call for technical support	208
Helpful hints	209
Solving general problems	211
Solving power problems	215
Solving hard drive problems	217
Solving media card reader problems	220
Solving display problems	222
Solving audio problems	227
Solving printer problems	229
Solving keyboard and mouse problems	231
Solving Hardware Installation Problems	233
Solving Network Problems	235
Solving memory problems	239
Solving processor problems	241
Solving CD-ROM and DVD problems	242
Solving USB flash drive problems	244
Solving front panel component problems	245
Solving Internet access problems	245
Solving software problems	247
POST error messages	249
POST numeric codes and text messages	250
Interpreting POST diagnostic front panel LEDs and audible codes	258
Password security and resetting CMOS	262
Resetting the password jumper	263
Clearing and resetting the CMOS	264
HP PC Hardware Diagnostics	266
Why run HP PC Hardware Diagnostics – UEFI	266
How to access and run HP PC Hardware Diagnostics - UEFI	266
Downloading HP PC Hardware Diagnostics to a USB device	267
System backup and recovery	268
Backing up, restoring, and recovering in Windows 8	268
Creating recovery media and backups	269
Restoring and recovering using Windows 8 tools	270
Using Windows 8 Refresh	270
Using Windows 8 Reset	271
Recovery using the Windows 8 recovery USB flash drive	272
Recovery using Windows 8 operating system media (purchased separately)	273
Backing up, restoring, and recovering in Windows 7	274
Creating recovery media	274
Creating recovery media using HP Recovery Manager (select models only)	275
Creating recovery discs with HP Recovery Disc Creator (select models only)	276
Creating recovery discs	276
Backing up your information	277
System Restore	277
System Recovery	278
System Recovery when Windows is responding	278
System Recovery when Windows is not responding	279
System Recovery using recovery media (select models only)	279
Using HP Recovery Disc operating system discs (select models only)	280
Battery replacement	282
Power cord set requirements	285
General requirements	285
Japanese power cord requirements	285
Country-specific requirements	286
Specifications	287
TWR specifications	287
SFF specifications	288
USDT specifications	289