Dell OptiPlex 7040 - Mini Tower

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Removing the speaker........................................................................................................................ 22

Installing the speaker.......................................................................................................................... 23

Removing the coin cell battery...........................................................................................................23

Installing the coin cell battery............................................................................................................ 24

Removing the heat sink assembly...................................................................................................... 24

Installing the heat sink assembly........................................................................................................24

Removing the processor.....................................................................................................................25

Installing the processor.......................................................................................................................25

Removing the system fan................................................................................................................... 26

Installing the system fan..................................................................................................................... 26

Removing the system board............................................................................................................... 27

Installing the system board.................................................................................................................27

System board layout........................................................................................................................... 28

3 Troubleshooting your computer.....................................................................30

Diagnostic power LED codes............................................................................................................. 30

Diagnostic error messages..................................................................................................................31

System error messages....................................................................................................................... 35

4 System Setup.......................................................................................................36

Boot Sequence....................................................................................................................................36

Navigation keys................................................................................................................................... 36

System Setup options..........................................................................................................................37

System Setup overview.......................................................................................................................45

Accessing System Setup..................................................................................................................... 45

Updating the BIOS ............................................................................................................................. 46

System and setup password...............................................................................................................46

Assigning a system password and setup password..................................................................... 47

Deleting or changing an existing system and/or setup password.............................................. 47

5 Specifications......................................................................................................48

6 Contacting Dell...................................................................................................53

Dell OptiPlex 7040 - Mini Tower - Page 4