Installing The System Board............................................................................................................................ 61
Entering The Service Tag After Replacing The System Board........................................................................ 62
4 Troubleshooting Your System................................................................................................. 63
Safety First—For You And Your System................................................................................................................. 63
Power LED Diagnostics.......................................................................................................................................... 63
Memory Beep Code................................................................................................................................................ 64
Troubleshooting System Startup Failure................................................................................................................ 64
Troubleshooting External Connections...................................................................................................................64
Troubleshooting The Video Subsystem.................................................................................................................. 64
Troubleshooting A USB Device.............................................................................................................................. 64
Troubleshooting A Serial I/O Device...................................................................................................................... 65
Troubleshooting A NIC............................................................................................................................................65
Troubleshooting A Wet System.............................................................................................................................. 66
Troubleshooting A Damaged System..................................................................................................................... 66
Troubleshooting The System Battery..................................................................................................................... 67
Troubleshooting A Non-Redundant Power Supply.................................................................................................67
Troubleshooting Cooling Problems.........................................................................................................................67
Troubleshooting The System Fan........................................................................................................................... 68
Troubleshooting System Memory...........................................................................................................................68
Troubleshooting An Optical Drive...........................................................................................................................69
Troubleshooting A Hard Drive................................................................................................................................ 69
Troubleshooting Expansion Cards..........................................................................................................................70
Troubleshooting The Processor............................................................................................................................. 70
5 Using System Diagnostics....................................................................................................... 71
Enhanced Pre-Boot System Assessment Diagnostics...........................................................................................71
System Diagnostic Controls............................................................................................................................. 71
6 Jumpers And Connectors........................................................................................................ 73
System Board Jumper Settings.............................................................................................................................. 73
System Board Connectors......................................................................................................................................73
Disabling A Forgotten Password............................................................................................................................ 74
7 Technical Specifications......................................................................................................... 77
Environmental Specifications.................................................................................................................................78
8 System Messages.....................................................................................................................81
Error Messages...................................................................................................................................................... 81
Warning Messages.................................................................................................................................................84
Alert Messages.......................................................................................................................................................84
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