Dell OptiPlex 7020 Tower OptiPlex 7020 Mini Tower Owners Manual - Page 4

System Setup, Diagnostics, Troubleshooting Your Computer, Specifications, Contacting Dell

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Page 4 highlights

Installing the Thermal Sensor...24 Removing the Power Switch...24 Installing the Power Switch...26 Removing the Input/Output (I/O) Panel 26 Installing the Input/Output (I/O) Panel 28 Removing the System Board...28 Installing the System Board...29 System Board Layout...29 3 System Setup...31 Boot Sequence...31 Navigation Keys...31 System Setup Options...32 Updating the BIOS ...41 Jumper Settings...41 System and Setup Password...42 Assigning a System Password and Setup Password 42 Deleting or Changing an Existing System and/or Setup Password 43 Disabling a System Password...43 4 Diagnostics...44 Enhanced Pre-Boot System Assessment (ePSA) Diagnostics 44 5 Troubleshooting Your Computer 45 Power LED Diagnostics...45 Beep Code...46 Error Messages...46 6 Specifications...50 7 Contacting Dell 56 4

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Installing the Thermal Sensor
.............................................................................................................
24
Removing the Power Switch
..............................................................................................................
24
Installing the Power Switch
................................................................................................................
26
Removing the Input/Output (I/O) Panel
............................................................................................
26
Installing the Input/Output (I/O) Panel
..............................................................................................
28
Removing the System Board
..............................................................................................................
28
Installing the System Board
................................................................................................................
29
System Board Layout
..........................................................................................................................
29
3 System Setup
.......................................................................................................
31
Boot Sequence
....................................................................................................................................
31
Navigation Keys
...................................................................................................................................
31
System Setup Options
.........................................................................................................................
32
Updating the BIOS
..............................................................................................................................
41
Jumper Settings
...................................................................................................................................
41
System and Setup Password
...............................................................................................................
42
Assigning a System Password and Setup Password
....................................................................
42
Deleting or Changing an Existing System and/or Setup Password
.............................................
43
Disabling a System Password
.......................................................................................................
43
4 Diagnostics
..........................................................................................................
44
Enhanced Pre-Boot System Assessment (ePSA) Diagnostics
...........................................................
44
5 Troubleshooting Your Computer
....................................................................
45
Power LED Diagnostics
.......................................................................................................................
45
Beep Code
...........................................................................................................................................
46
Error Messages
....................................................................................................................................
46
6 Specifications
......................................................................................................
50
7 Contacting Dell
...................................................................................................
56
4