Open your computer case

1. Turn off your computer and unplug it from its power source. This is very important. Installing a card in a computer that's plugged in could shock you or damage the card and computer.
2. Open the computer case. Look on the computer cover (usually on the back) for screws or clasps to undo the case. Computer documentation typically includes instructions on how to open the case.
3. After opening the case, ground yourself by touching the metal casing that surrounds the jack where the power cord plugs in. This can help protect you from an electric shock and can help protect the new card and existing computer components from static electricity.