7 Troubleshooting without diagnostics ............................................................................................................ 62
Safety and comfort .............................................................................................................................................. 62
Before you call for technical support .................................................................................................................. 62
Helpful hints ........................................................................................................................................................ 63
Solving general problems ................................................................................................................................... 64
Solving power problems ...................................................................................................................................... 68
Solving hard drive problems ............................................................................................................................... 69
Solving media card reader problems .................................................................................................................. 71
Solving display problems .................................................................................................................................... 72
Solving audio problems ....................................................................................................................................... 76
Solving printer problems ..................................................................................................................................... 78
Solving keyboard and mouse problems ............................................................................................................. 79
Solving Hardware Installation Problems ............................................................................................................ 81
Solving Network Problems .................................................................................................................................. 83
Solving memory problems .................................................................................................................................. 86
Solving CD-ROM and DVD problems .................................................................................................................... 88
Solving USB flash drive problems ....................................................................................................................... 90
Solving front panel component problems .......................................................................................................... 91
Solving Internet access problems ....................................................................................................................... 91
Solving software problems ................................................................................................................................. 92
8 POST error messages ................................................................................................................................... 94
POST numeric codes and text messages ............................................................................................................ 94
Interpreting POST diagnostic front panel LEDs and audible codes .................................................................. 100
9 Password security and resetting CMOS ........................................................................................................ 103
Resetting the CMOS and password jumper ....................................................................................................... 103
Changing a Setup or Power-On password ........................................................................................................ 104
Deleting a Setup or Power-On password .......................................................................................................... 105
10 HP PC Hardware Diagnostics ..................................................................................................................... 106
Why run HP PC Hardware Diagnostics .............................................................................................................. 106
How to access and run HP PC Hardware Diagnostics ....................................................................................... 106
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................. 106
11 System backup and recovery .................................................................................................................... 108
Backing up, restoring, and recovering in Windows 8.1 or Windows 8 ............................................................. 108
Creating recovery media and backups ........................................................................................... 108
Restoring and recovering using Windows tools ............................................................................. 108
Using Reset when the system is not responding ......................................................... 109
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