- 1). Turn the computer off and unplug all cables from the rear.
- 2). Unscrew the back right panel from the computer and slide it off.
- 3). Unscrew the screw that attaches the existing graphics card to the back of the case. Press the lever to the side of the graphics card to release it from the motherboard. Firmly pull it away.
- 4). Place the new graphics card into the slot and push it firmly into place. Screw the connecting screw back into the back panel to hold the graphics card in place. Reattach the side panel of the computer and plug all cables back in.
- 5). Turn the computer on and insert the new graphics card installation disc. Follow the onscreen instructions to install the drivers for the ATI graphics card. Restart your computer when complete.