Spread new thermal grease evenly on the CPU.
Have the clip ready.
Aim the hole of the clip at the peg.
Put on the rubber cover.
Place the cooler into the retention frame. The lever is in a loose position.
Hook the right clip to the retention frame.
Hook the left clip to the retention frame.
Turn the lever to the other side to fasten the cooler.
Connect the fan connector to the motherboard.
Complete.