11. Lift the power supply up and out of the computer.
Replacing the Power Supply
1. Slide the power supply into place.
2. Reconnect the DC power cables.
3. Connect the AC power cable to the AC power connector on the back of the power supply.
4. Reattach the power cables to the side of the hard drive and replace the card cage replace the expansion-card cage.
5. Run the cables underneath the clips.
6. Press the clips to close them over the cables.
7. Close the computer cover.
8. Attach the computer stand (optional).
9. Connect your computer and devices to electrical outlets, and turn them on.
Replacing the Battery
A coin-cell battery maintains computer configuration, date, and time information. The battery can last several years.
If you have to repeatedly reset time and date information after turning on the computer, replace the battery.
1. Record all the screens in the system setup program so that you can restore the correct settings in step 10.
2. Shut down the computer.
3. Turn off any attached devices and disconnect them from their electrical outlets.
4. Disconnect the computer power cable from the wall outlet, and then press the power button to ground the system board.
5. Open the computer cover.
6. Locate the battery socket BATTERY on the system board and pry the battery out of its socket with your fingers or with a plastic screwdriver.
7. Insert the battery into the socket with the side labeled "+" facing up.
8. Replace the computer cover.
9. Connect your computer and devices to electrical outlets, and turn them on.