Dell OptiPlex 9020 Owner's Manual page 4

Removing the Power Switch
Installing the Power Switch
Removing the Input/Output (I/O) Panel
Installing the Input/Output (I/O) Panel
Removing the System Board
Installing the System Board
System Board Components
3 System Setup............................................................................................................31
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Boot Sequence
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Navigation Keys
System Setup Options
Updating the BIOS
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Jumper Settings
System and Setup Password
Assigning a System Password and Setup Password
Deleting or Changing an Existing System and/or Setup Password
Disabling a System Password
4 Diagnostics...............................................................................................................45
Enhanced Pre-Boot System Assessment (ePSA) Diagnostics
5 Troubleshooting Your Computer.......................................................................47
Power LED Diagnostics
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Beep Code
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Error Messages
6 Specifications.......................................................................................................... 53
7 Contacting Dell........................................................................................................61
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