Unplug the wires connected to the logic board from the Cooling Fan.

Unscrew the three screws (Boxed In Red).

Lift out the Fan and the heat sink it is attached to.

Twist the screw slightly to the left, so that the pointed black plastic point looks like picture 3. It will not come out easily if this is done wrong so check, check then check again.

Lift out the processor carefully.