Troubleshooting a damaged system................................................................................................156
Troubleshooting the system battery.................................................................................................157
Troubleshooting power supply units............................................................................................... 158
Troubleshooting power source problems................................................................................. 158
Troubleshooting power supply unit problems...........................................................................158
Troubleshooting cooling problems..................................................................................................159
Troubleshooting cooling fans.......................................................................................................... 159
Troubleshooting system memory....................................................................................................160
Troubleshooting an internal USB key...............................................................................................161
Troubleshooting an SD card.............................................................................................................161
Troubleshooting a hard drive........................................................................................................... 162
Troubleshooting a storage controller..............................................................................................163
Troubleshooting expansion cards....................................................................................................164
Troubleshooting processors.............................................................................................................164
Troubleshooting a GPU.................................................................................................................... 165
System messages..............................................................................................................................165
Warning messages.......................................................................................................................165
Diagnostic messages...................................................................................................................165
Alert messages.............................................................................................................................166
6 Using system diagnostics................................................................................167Dell 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 diagnostic controls.........................................................................................................168
7 Jumpers and connectors................................................................................ 169System board jumper settings..........................................................................................................169
System board connectors.................................................................................................................170
Disabling a forgotten password........................................................................................................ 171
8 Technical specifications..................................................................................1739 Getting help.......................................................................................................177Contacting Dell..................................................................................................................................177
Locating your system service tag......................................................................................................177
Mini Express Service Tag.............................................................................................................178
Quick Resource Locator ..................................................................................................................178
7