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
10 Getting help..............................................................................................................................................105
Contacting Dell............................................................................................................................................................... 105
Documentation feedback..............................................................................................................................................105
Accessing system information by using QRL............................................................................................................. 105
Quick Resource Locator..........................................................................................................................................106
Locating Service Tag of your system..........................................................................................................................106
6
Contents