Dell Precision Tower 3420 - Page 4

Removing the system board...............................................................................................................24
Installing the system board.................................................................................................................25
System board components................................................................................................................ 26
3 System Setup....................................................................................................... 28
Boot Sequence....................................................................................................................................28
Navigation keys................................................................................................................................... 29
System Setup options......................................................................................................................... 29
Updating the BIOS ..............................................................................................................................37
Jumper settings...................................................................................................................................38
System and setup password............................................................................................................... 38
Assigning a system password and setup password..................................................................... 38
Deleting or changing an existing system and/or setup password.............................................. 39
Disabling a system password........................................................................................................39
4 Diagnostics.......................................................................................................... 41
Enhanced Pre-Boot System Assessment (ePSA) diagnostics............................................................ 41
Troubleshooting your computer........................................................................................................42
Power LED diagnostics................................................................................................................. 42
Beep code......................................................................................................................................43
Error messages..............................................................................................................................43
5 Specifications...................................................................................................... 47
6 Contacting Dell...................................................................................................53
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