8 Contents
4 Troubleshooting Your System . . . . . . . . 145
Safety First—For You and Your System . . . . . . . . 145
Start-Up Routine
. . . . . . . . . . . . . . . . . . . . 145
Checking Basic Power Problems
. . . . . . . . . . . 146
Checking the Equipment
. . . . . . . . . . . . . . . . 146
Troubleshooting External Connections
. . . . . . 147
Troubleshooting the Video Subsystem
. . . . . . 147
Troubleshooting the Keyboard or Mouse
. . . . . 148
Troubleshooting Serial I/O Problems
. . . . . . . . . 150
Troubleshooting a Serial I/O Device
. . . . . . . 150
Troubleshooting a USB Device
. . . . . . . . . . 151
Troubleshooting a NIC
. . . . . . . . . . . . . . . . . 153
Troubleshooting a Wet System
. . . . . . . . . . . . . 154
Troubleshooting a Damaged System
. . . . . . . . . . 155
Troubleshooting the System Battery
. . . . . . . . . . 155
Troubleshooting Power Supplies
. . . . . . . . . . . 156
Troubleshooting System Cooling Problems
. . . . . . 157
Troubleshooting a Fan
. . . . . . . . . . . . . . 157
Troubleshooting System Memory
. . . . . . . . . . . 158
Troubleshooting an Optical Drive
. . . . . . . . . . . 160
Troubleshooting a Hard Drive
. . . . . . . . . . . . . 161
Troubleshooting a SAS Controller or SAS
RAID Controller
. . . . . . . . . . . . . . . . . . . . . 163
Troubleshooting an External SAS Tape Drive
. . . . . 165
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