System diagnostic controls
......................................................................................................... 171
7 Jumpers and connectors.................................................................................172
System board jumper settings
.......................................................................................................... 172
System board jumpers and connectors
........................................................................................... 173
Disabling a forgotten password
........................................................................................................ 175
8 Troubleshooting your system........................................................................ 176
Safety first — for you and your system
.............................................................................................176
Troubleshooting system startup failure
............................................................................................176
Troubleshooting external connections
............................................................................................ 176
Troubleshooting the video subsystem
............................................................................................. 176
Troubleshooting a USB device
..........................................................................................................177
Troubleshooting iDRAC Direct (USB XML configuration)
................................................................178
Troubleshooting iDRAC Direct (Laptop connection)
...................................................................... 178
Troubleshooting a serial I/O device
................................................................................................. 179
Troubleshooting a NIC
......................................................................................................................179
Troubleshooting a wet system
.........................................................................................................180
Troubleshooting a damaged system
................................................................................................ 181
Troubleshooting the system battery
.................................................................................................181
Troubleshooting power supply units
............................................................................................... 182
Troubleshooting power source problems
................................................................................. 182
Troubleshooting power supply unit problems
...........................................................................182
Troubleshooting cooling problems
..................................................................................................183
Troubleshooting cooling fans
.......................................................................................................... 184
Troubleshooting system memory
.................................................................................................... 184
Troubleshooting an internal USB key
...............................................................................................185
Troubleshooting an SD card
.............................................................................................................186
Troubleshooting an optical drive
......................................................................................................187
Troubleshooting a tape backup unit
................................................................................................ 187
Troubleshooting a hard drive
........................................................................................................... 188
Troubleshooting a storage controller
.............................................................................................. 189
Troubleshooting expansion cards
....................................................................................................190
Troubleshooting processors
............................................................................................................. 191
System messages
...............................................................................................................................191
Warning messages
.......................................................................................................................191
Diagnostic messages
................................................................................................................... 191
Alert messages
.............................................................................................................................192
9 Getting help.......................................................................................................193
Contacting Dell
................................................................................................................................. 193
Documentation feedback
.................................................................................................................193
7