Before removing the processor you must first remove the aluminum heat sink.

To avoid bending the fins, don't squeeze the upper portion of the heat sink perpendicular to the length of the fins.

A spring loaded plastic pin at each corner of the heat sink holds it firmly against the face of the processor.

The pins have barbs at one end that expand once the pin passes through the logic board. The barbs must be squeezed together to fit through the holes in the logic board. Use extreme caution when squeezing the barbs together with pliers near the exposed face of the logic board.