Dell OptiPlex 3020 Owner's Manual page 4

3 System setup.............................................................................................................................28
Boot Sequence.................................................................................................................................................................... 28
Navigation keys....................................................................................................................................................................28
System Setup Options........................................................................................................................................................29
Updating the BIOS in Windows ........................................................................................................................................ 37
Clearing Forgotten Password............................................................................................................................................ 38
Clearing CMOS.................................................................................................................................................................... 38
System and setup password..............................................................................................................................................38
Assigning a system setup password........................................................................................................................... 39
Deleting or changing an existing system setup password........................................................................................39
Disabling a System Password...................................................................................................................................... 39
4 Diagnostics................................................................................................................................ 41
Enhanced Pre-Boot System Assessment - ePSA diagnostics.................................................................................... 41
5 Troubleshooting your computer...................................................................................................42
Power LED Diagnostics...................................................................................................................................................... 42
Beep Code............................................................................................................................................................................ 42
Error messages.................................................................................................................................................................... 43
6 Technical Specifications............................................................................................................. 47
7 Contacting Dell EMC.................................................................................................................. 50
4 Contents