Personal Computer User Manual

Contents 7
Replacing the Processor . . . . . . . . . . . . . . . . 100
12 Power Supply . . . . . . . . . . . . . . . . . . . . 103
Mini Tower Computer Power Supply . . . . . . . . . . 103
Removing the Power Supply From the Mini Tower Computer
103
Replacing the Power Supply in the Mini Tower Computer
104
Power Connectors in the Mini Tower Computer
. . 106
Desktop Computer Power Supply
. . . . . . . . . . . . 110
Removing the Power Supply From the Desktop Computer
110
Replacing the Power Supply in the Desktop Computer
111
Power Connectors in the Desktop Computer . . . 112
13 BIOS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Flashing the BIOS From a CD . . . . . . . . . . . . . . 117
Flashing the BIOS From the Hard Drive
. . . . . . . . . 118
14 System Board . . . . . . . . . . . . . . . . . . . . 119
Removing the System Board . . . . . . . . . . . . . . . 119
Replacing the System Board. . . . . . . . . . . . . . . 120
15 Troubleshooting . . . . . . . . . . . . . . . . . . . 123
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Power Lights
. . . . . . . . . . . . . . . . . . . . 123
Beep Codes
. . . . . . . . . . . . . . . . . . . . . 124
Diagnostic Lights . . . . . . . . . . . . . . . . . . 126
Diagnostic Light Codes During POST
. . . . . . . . 127