Use a coin to turn the battery locking screw 90 degrees to the right. Lift the battery out of the computer. /Guide/Repair/PowerBook-G4-Aluminum-12-Inch-1-1-5-GHz-EMI-Finger/540/all#s2569 Remove the four Phillips screws from the memory door. Slide the memory door away from the memory compartment. /Guide/Repair/PowerBook-G4-Aluminum-12-Inch-1-1-5-GHz-EMI-Finger/540/all#s2572 Remove the long black Phillips screw next to the memory card. Remove the small EMI finger beneath the black screw. /Guide/Repair/PowerBook-G4-Aluminum-12-Inch-1-1-5-GHz-EMI-Finger/540/all#s2573