The handle to open your computer is located on top of the right side panel.

Grab the circular handle and pull outward.

Your computer is now open and ready for repair.

This is your Power Mac G4's video adapter.

Start by removing the screw holding the card to the chassis as shown.

Before lifting the card out, this small plastic tab needs to be pulled back there by releasing it entirely.

With the tab and screw removed, lift the card straight out.

When putting the card back in, take care to apply even pressure across the top with your thumbs. This will avoid damaging the card.

First you want to remove the fan. Remove the two screws on the back of the computer in the upper left hand corner.

Remove the fan unit by pulling straight up and out.

Be carful not to rip out the cord still attached to the motherboard. Remove it gently.

You need detach the heat sink from the CPU. Locate the four clamps holding it down, two on each side.

Taking off the clamps can be difficult. Use a screwdriver to push down on the top of the clip. Then insert a spudger below the heat sink to pull it away from the board, releasing the heat sink.

Pull the heat sink up and off of the CPU.

Remove the four screws holding the CPU to the motherboard.

Now you can remove the CPU by pulling it straight up from the motherboard.

Be very careful when you detach the CPU. There is a connector that has hundreds of little prongs. You must not bend or break any of them! Be extremely careful.