Introduction
Tools
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Insert the tip of a small flathead screwdriver between the X clamp and its retaining post on the heat sink.
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Pry the X clamp away from its retaining post until it is lifted above the small groove cut into the retaining post.
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Remove the CPU heat sink from the motherboard.
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.