just a note, recently came across a thread where this cooler was causing a short on the mobo iirc, and it required insulation tape to be put over the bottom of the screws, might be worth remembering in case u get start up issues.
EDIT : details posted by richdog
Basically the backplate is shorting the mobo, the foam protection isn't enough and the pins are sticking right through. You need to take it off and stick about 3 to 4 layers of electrical tape around it where it will be pressing against your mobo. Bingo, it'll boot.