Dell OptiPlex 7020 (Mid 2014) - Manual (Page 4)

Removing the Power Switch .............................................................................................................. 23
Installing the Power Switch ................................................................................................................ 24
Removing the Input/Output (I/O) Panel .............................................................................................25
Installing the Input/Output (I/O) Panel .............................................................................................. 26
Removing the System Board .............................................................................................................. 26
Installing the System Board .................................................................................................................27
System Board Layout ...........................................................................................................................27
3 System Setup....................................................................................................... 29
Boot Sequence ....................................................................................................................................29
Navigation Keys ...................................................................................................................................29
System Setup Options ........................................................................................................................ 30
Updating the BIOS ............................................................................................................................. 38
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.......................................................................................................... 42
Enhanced Pre-Boot System Assessment (ePSA) Diagnostics ........................................................... 42
5 Troubleshooting Your Computer....................................................................43
Power LED Diagnostics .......................................................................................................................43
Beep Code ...........................................................................................................................................44
Error Messages ....................................................................................................................................44
6 Specifications......................................................................................................48
7 Contacting Dell................................................................................................... 54