Locate the (5) captive screws that hold down the heat sink assembly to the central processing unit and the graphics processing unit.

Unscrew captive screw #1 with a JIS 1 screwdriver for one or two turns and move onto the next screw (#2) and so on, in consecutive order.

Continue to slowly loop around the 5 captive screws in order, only loosening the screws one or two turns each time until all screws are completely retracted.