1. Disconnect the 2-pin cable for the upper processor (CPU A) heatsink from the logic board.
5. Using a long-handled, magnetized 3 mm flathead hex screwdriver, loosen the four captive mounting screws for the lower processor heatsink in the order indicated below.
6. Carefully tilt the heatsink so that it clears the bottom lip of the enclosure and then lift the heatsink out of the computer.
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Read how to maintain and repair any desktop and laptop computer. This Ebook has articles with photos and videos that show detailed step by step pc repair and maintenance procedures. There are many links to online videos that explain how you can build, maintain, speed up, clean, and repair your computer yourself. Put the money that you were going to pay the PC Tech in your own pocket.