2Replace and tighten the four screws that secure the power supply to the back of the computer chassis.
WARNING: The screws are a key part of the system grounding. Failure to replace and tighten all four screws may cause electrical shock.
CAUTION: Route the power cables under the chassis tabs. The cables must be properly routed to prevent the cables from being damaged.
3Reconnect the power cables to the system board and drives.
4Secure the hard drive cable, optical drive data cable, and the front panel cables to the securing clips inside the chassis, where available.
NOTE: Ensure all cable connectors are securely attached.
5Follow the procedure in "After Working on Your Computer" on page 17.
CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the computer.
6Verify the computer works correctly by running the Dell™ Diagnostics (see "Dell Diagnostics" on page 136).
Power Supply
