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-867-MHz-RAM/199/all#s723 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-867-MHz-RAM/199/all#s724 Release the tabs on each side of the RAM chip at the same time. These tabs lock the chip in place and releasing them will cause the chip to "pop" up. Pull the chip directly out from its connectors. /Guide/Repair/PowerBook-G4-Aluminum-12-Inch-867-MHz-RAM/199/all#s725