Use a coin to turn the battery locking screw 90 degrees to the right. Lift the battery out of the computer. /Guide/Installing-PowerBook-G4-Aluminum-12-Inch-867-MHz-EMI-Finger/200/all#s723 Remove the four Phillips screws from the memory door. Slide the memory door away from the memory compartment. /Guide/Installing-PowerBook-G4-Aluminum-12-Inch-867-MHz-EMI-Finger/200/all#s726 Remove the long black Phillips screw next to the memory card. Remove the small EMI finger beneath the black screw. /Guide/Installing-PowerBook-G4-Aluminum-12-Inch-867-MHz-EMI-Finger/200/all#s727