Troubleshooting a USB device.......................................................................................................................................96
Troubleshooting a serial I/O device...............................................................................................................................97
Troubleshooting a NIC.....................................................................................................................................................97
Troubleshooting a wet system....................................................................................................................................... 97
Troubleshooting a damaged system..............................................................................................................................98
Troubleshooting the system battery............................................................................................................................. 99
Troubleshooting power supply units..............................................................................................................................99
Troubleshooting power source problems............................................................................................................... 99
Power supply unit problems....................................................................................................................................100
Power supply unit Built-in Self Test button..........................................................................................................100
Troubleshooting cooling fans.........................................................................................................................................101
Troubleshooting system memory..................................................................................................................................101
Troubleshooting an optical drive.................................................................................................................................. 102
Troubleshooting a hard drive ....................................................................................................................................... 103
Troubleshooting expansion cards.................................................................................................................................103
Troubleshooting processors..........................................................................................................................................104
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