Step 5. Disconnect the power cables from the connectors on motherboard.
Step 6. Remove the 4 screws that secure the Power supply to the chassis.
Step 7. Slide then lift the Power supply out of chassis.
Step 8. Install the new power supply
:
a. Line up the holes on the new power supply with mounting holes on
the rear of the chassis and secure it to the chassis with the 4 screws.
b. Connect the power cables to the connectors on the motherboard.
Step 9. Reattach the computer cover.
Replacing the Wi-Fi card
Note:
For this procedure, it helps to lay the computer flat.
To replace the Wi-Fi card:
Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives,
shut down the operating system, and turn off the computer and all
attached devices.
Step 2. Unplug all power cords from electrical outlets.
Step 3. Disconnect all cables attached to the computer. This includes power
cords, input/output (I/O) cables, and any other cables that are connected
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