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6 Troubleshooting your system........................................................................ 152
Safety first—for you and your system...............................................................................................152
Troubleshooting system startup failure............................................................................................152
Troubleshooting external connections............................................................................................152
Troubleshooting the video subsystem.............................................................................................152
Troubleshooting a USB device......................................................................................................... 153
Troubleshooting iDRAC Direct (USB XML configuration)................................................................153
Troubleshooting iDRAC Direct (laptop connection)....................................................................... 154
Troubleshooting a serial I/O device................................................................................................. 154
Troubleshooting a NIC......................................................................................................................155
Troubleshooting a wet system......................................................................................................... 155
Troubleshooting a damaged system................................................................................................156
Troubleshooting the system battery.................................................................................................157
Troubleshooting power supply units................................................................................................157
Troubleshooting power source problems..................................................................................157
Power supply unit problems.......................................................................................................158
Troubleshooting cooling problems..................................................................................................158
Troubleshooting cooling fans.......................................................................................................... 159
Troubleshooting system memory.................................................................................................... 159
Troubleshooting an internal USB key...............................................................................................160
Troubleshooting an SD card............................................................................................................. 161
Troubleshooting an optical drive......................................................................................................161
Troubleshooting a tape backup unit................................................................................................ 162
Troubleshooting a hard drive........................................................................................................... 163
Troubleshooting a storage controller.............................................................................................. 163
Troubleshooting expansion cards....................................................................................................164
Troubleshooting processors.............................................................................................................165
System messages.............................................................................................................................. 165
Warning messages.......................................................................................................................165
Diagnostic messages...................................................................................................................166
Alert messages.............................................................................................................................166
7 Using system diagnostics................................................................................ 167
Dell embedded system diagnostics..................................................................................................167
When to use the embedded system diagnostics....................................................................... 167
Running the Embedded System Diagnostics from Boot Manager............................................167
Running the Embedded System Diagnostics from the Dell Lifecycle Controller.................... 168
System diagnostics controls.......................................................................................................168
8 Jumpers and connectors................................................................................ 169
System board connectors.................................................................................................................169
7