WLAN Module .................................................................................................................................... 64
Speakers ............................................................................................................................................ 66
Stand bracket ..................................................................................................................................... 68
System Board ..................................................................................................................................... 70
Hard Drive and Optical Drive Cables and Connectors ....................................................................... 73
Display Cable ..................................................................................................................................... 75
Front Bezel ......................................................................................................................................... 77
Display Panel ..................................................................................................................................... 78
Power Switch Assembly ..................................................................................................................... 82
7 Troubleshooting Without Diagnostics ........................................................................................................ 84
Safety and Comfort ............................................................................................................................ 84
Solving General Problems .................................................................................................................. 85
Solving Power Problems .................................................................................................................... 88
Solving Hard Drive Problems ............................................................................................................. 88
Solving Media Card Reader Problems ............................................................................................... 92
Solving Display Problems ................................................................................................................... 93
Solving Audio Problems ..................................................................................................................... 96
Solving Printer Problems .................................................................................................................... 98
Solving Keyboard and Mouse Problems ............................................................................................ 99
Solving Hardware Installation Problems ........................................................................................... 101
Solving Network Problems ............................................................................................................... 102
Solving Memory Problems ............................................................................................................... 105
Solving Processor Problems ............................................................................................................ 106
Solving CD-ROM and DVD Problems .............................................................................................. 107
Solving USB Flash Drive Problems .................................................................................................. 109
Solving Internet Access Problems .................................................................................................... 110
Solving Software Problems .............................................................................................................. 112
8 POST Error Messages ................................................................................................................................ 113
POST Numeric Codes and Text Messages ..................................................................................... 114
Interpreting POST Diagnostic Front Panel LEDs ............................................................................. 115
9 Password Security and Resetting CMOS ................................................................................................. 116
Establishing a Setup or Power-on Password ................................................................................... 117
Resetting the Setup and Power-on Password .................................................................................. 118
Resetting CMOS .............................................................................................................................. 119
Appendix A Power Cord Set Requirements ................................................................................................ 120
General Requirements ..................................................................................................................... 120
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