Dell OptiPlex 9020 Mini Tower

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Removing the Power Switch...................................................................................................................................22

Installing the Power Switch....................................................................................................................................23

Removing the Input/Output (I/O) Panel...................................................................................................................24

Installing the Input/Output (I/O) Panel.................................................................................................................... 25

Removing the System Board...................................................................................................................................25

Installing the System Board....................................................................................................................................26

System Board Components.................................................................................................................................... 27

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