Dell Inspiron 580s Service Manual page 40

CAUTION: Ensure that the port retention springs are not damaged while replacing the sytem board.
2. Gently align the system board into the chassis and slide it towards the back of the computer.
1 back of the computer 2 port retention spring
3. Replace the eight screws that secure the system board to the chassis.
4. Route and connect the cables that you disconnected from the system board.
CAUTION: Ensure that the processor fan and heat sink assembly is correctly seated and secure.
5. Replace the processor (see
6. Replace the processor fan and heat sink assembly (see
7. Replace the optical drive (see
8. Replace the memory modules (see
9. Replace any PCI and PCI Express cards on the system board (see
10. Replace the support bracket (see
11. Replace the computer cover (see
12. Connect your computer and devices to electrical outlets, and turn them on.
13. Flash the system BIOS, as needed (see
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Replacing the Processor).
Replacing the Processor Fan and Heat Sink
Replacing the Optical Drive).
Replacing the Memory Module(s)).
Replacing the Support Bracket).
Replacing the Computer Cover).
Flashing the BIOS).
Assembly).
Replacing PCI and PCI Express Cards).