Use a coin to rotate the battery-locking screw 90 degrees clockwise. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2425 Lift the battery out of the computer. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2426 Unscrew the three evenly-spaced Phillips screws from along the rear wall of the battery compartment. The screws are captive to the metal memory cover. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2427 Rotate the L-shaped memory cover so it clears the battery compartment opening and lift it up and out of the computer. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2428 Remove the following 3 screws: One 11 mm Phillips in the middle of the case. Two 14.5 mm Phillips. If the screws stick in the case, you can use a magnetized screwdriver to draw them out. The shorter of the three screws goes in the middle. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2434 Remove the following 3 screws from the rear wall of the battery compartment: Two 3 mm Phillips. One 4 mm Phillips on the right side. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2435 Remove the two Phillips screws from either side of the right wall of the battery compartment (not the ones closest to the battery connector). /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2436 Remove the four indicated Phillips screws from the front wall of the battery compartment. When working from the left, remove the 2nd, 4th, 7th and 9th screw. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2437 Remove the following 4 screws from the back of the computer: Two 7 mm Philips on the far sides. Two 10.5 mm Phillips toward the center. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2439 Remove the two Phillips screws from the optical drive side of the computer. It is not necessary to remove the similar screws on the other side of the computer. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2440 There's a trackpad and keyboard ribbon connecting the upper case to the logic board, so don't pull the upper case off entirely just yet. Starting near the display and working around to the front of the computer, pry up on the upper case. The upper case is likely to stick at the connection above the optical drive. If this is the case first free all other sides, then proceed to pull upward on the upper case from either side of the optical drive opening. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2441 While holding up the upper case, pull up the black tab of the silver cable away from its connector. If there is no black tab, you can also use a spudger to gently pry the connector from its housing. This connector is tall, so be sure to pry straight up. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2442 Carefully peel up the black felt tape between the heat sink and fan. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2485 Peel up the small black rubber cover from the right side of the heat sink. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2486 Use a spudger to disconnect the two newly-revealed temperature sensor connectors from the logic board. If you have a MacBook Core 2 Duo Santa Rosa/Penryn, there is only one temperature sensor. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2487 Use a spudger to disconnect the two newly-revealed temperature sensor connectors from the logic board. If you have a MacBook Core 2 Duo Santa Rosa/Penryn, there is only one temperature sensor. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2487 Remove the four Phillips screws securing the heat sink to the lower case. Be sure to secure the ground loop for the speaker cable beneath the screw in the lower right corner when replacing the heat sink. If you have a MacBook Core 2 Duo Santa Rosa/Penryn, the two Philips screws on the right are in a different location. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2488 Remove the four Phillips screws securing the heat sink to the lower case. Be sure to secure the ground loop for the speaker cable beneath the screw in the lower right corner when replacing the heat sink. If you have a MacBook Core 2 Duo Santa Rosa/Penryn, the two Philips screws on the right are in a different location. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2488 Lift the heat sink out of the computer, making sure the black tape doesn't catch on the heat sink. If you need to mount the heat sink back into the laptop, we have a thermal paste guide that makes replacing the thermal compound easy. /Guide/Repair/MacBook-Core-2-Duo-Heat-Sink/524/all#s2489