HP ProDesk 400 G4 Maintenance And Service Manual page 126

keyboard problems 73
L
lights
hard drive activity 2
M
media card reader
problems 65
memory
problems 81
memory card reader 2
memory module
removal and replacement 34
microphone jack 2
monitor problems 66
mouse
cleaning 19
problems 73
N
network jack 3
network problems 77
numeric error codes 86
O
operating guidelines 17
overheating, prevention 17
P
password
clearing 93
power-on 93
setup 93
passwords 95, 96
ports
USB 2.0 2, 3
USB 2.0 with HP Sleep and
Charge 2
USB 3.x 3
POST error messages 86
power button 2
power cord connector 3
power cord set requirements
country specific 115
power problems 62
power supply
operating voltage range 116
removal and replacement 23, 37
Power-On password 95, 96
power-on password 93
118 Index
printer problems 72
problems
audio 70
Computer Setup 58
F10 Setup 58
flash drive 82
front panel 83
general 58
hard drive 63
hardware installation 76
Internet access 83
keyboard 73
Media Card Reader 65
memory 81
monitor 66
mouse 73
network 77
power 62
printer 72
software 85
processor
removal and replacement 41
R
rear panel components 3
recovery discs, steps for creating
Windows 7 104
recovery discs, using for restore
108
recovery media, creating 105
recovery media, creating Windows
7 103
recovery USB flash drive, steps for
creating Windows 7 104
removal and replacement
access panel 24
drive cage 28
dust cover 26
expansion card 35
fan cowling 38
fan-sink 39
front bezel 25
hard drive 29
memory module 34
power supply 23, 37
processor 41
slim optical drive 27
speaker 31
system board 42
WLAN module 32
removing
battery 110
resetting
CMOS 93
password jumper 93
RJ-45 jack 3
S
safety and comfort 56
safety precautions
cleaning 18
SATA
connectors on system board 22
hard drive characteristics 22
screws, correct size 20
service considerations 20
Setup password 95, 96
setup password 93
slim optical drive
location 2
removal and replacement 27
software
problems 85
servicing computer 20
speaker
removal and replacement 31
specifications
computer 116
static electricity 14
system board
removal and replacement 42
SATA connectors 22
System Recovery using Windows 7
recovery media 108
System Recovery, Windows 7 106
system restore points, creating
Windows 7 103
System Restore, Windows 7 106
T
temperature control 17
tools, servicing 20
Torx T15 screwdriver 20
U
USB 2.0 port 2, 3
USB 2.0 port with HP Sleep and
Charge 2
USB 3.x port 3