Dell OptiPlex 9020 (Mid 2013) - Manual (Page 4)

Removing the Coin-Cell Battery ..............................................................................................................................24
Installing the Coin-Cell Battery ...............................................................................................................................24
Removing the System Fan .......................................................................................................................................25
Installing the System Fan ........................................................................................................................................26
Removing the System Board ...................................................................................................................................26
System Board Layout ..............................................................................................................................................27
Installing the System Board ....................................................................................................................................28
3 System Setup............................................................................................................................. 29
Boot Sequence ....................................................................................................................................................... 29
Navigation Keys ......................................................................................................................................................29
System Setup Options .............................................................................................................................................30
Updating the BIOS ................................................................................................................................................. 39
Jumper Settings ......................................................................................................................................................39
System and Setup Password ..................................................................................................................................39
Assigning a System Password and Setup Password ...................................................................................... 40
Deleting or Changing an Existing System and/or Setup Password ..................................................................40
Disabling a System Password ..........................................................................................................................41
4 Diagnostics.................................................................................................................................43
Enhanced Pre-Boot System Assessment (ePSA) Diagnostics ...............................................................................43
5 Troubleshooting Your Computer.............................................................................................45
Power LED Diagnostics .......................................................................................................................................... 45
Beep Code .............................................................................................................................................................. 46
Error Messages ...................................................................................................................................................... 46
6 Specifications............................................................................................................................ 51
7 Contacting Dell.......................................................................................................................... 59