Dell Vostro A100 (Early 2009) - Manual (Page 20)

7. Lift the system board away from the chassis.
8. Align the screw holes on the system board with the screw holes on the chassis.
9. Replace the screws that secure the system board to the chassis.
10. Connect the cables that you removed from the system board.
11. If applicable, replace the processor (see Replacing the Processor (Dell™ Vostro™ A180 only) ).
12. Replace the memory modules into the memory module connectors at the same locations from which you removed them (see Replacing Memory Module
(s) ).
13. Replace any add-in cards on the system board.
14. Replace the computer cover (see Replacing the Computer Cover ).
15. Connect your computer and devices to an electrical outlet, and turn them on.
16. Flash the system BIOS, as needed.
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NOTICE: If you are replacing the system board, visually compare the replacement system board to the existing system board to ensure that you
have the correct part.
NOTE: Some components and connectors on replacement system boards may be in different locations than corresponding connectors on the existing
system board.
NOTE: Jumper settings on replacement system boards are preset at the factory.
NOTICE: Ensure that the heat sink assembly is correctly seated and secure.
NOTE: For information on flashing the system BIOS, see Flashing the BIOS .