7. Follow the procedures in After Working Inside Your Computer.
Removing the Power Supply Unit (PSU)
1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the:
a. VESA stand
b. back cover
c. VESA mount bracket
d. system-board shield
e. input/output (I/O) board shield
f. power-supply fan
3. Disconnect the power-supply cable from the connector on the system board.
4. Perform the following steps as shown in the illustration:
a. Unthread the cable from the hooks in the computer [1].
b. Remove the screws that secure the power-supply unit to the chassis [2].
c. Slide upwards to release the power-supply unit from the chassis [3].
d. Lift the power-supply unit up and remove it from the computer [4].
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