Insert the new Processor.

Twist the screw Clockwise Back into its original position (So the black point is pointing right).

Use isopropyll to clean the processor is necessary.

Open up the thermal Compound and apply it to the shiny reflective part of the new processor ( Do not use lots only a little is needed but ensure that the whole of it is covered).

It should look just about like the second Photo but it will differ in colour and positioning.