[pantherx12]

Snap the push pins out, go to hardware store buy 4x m4 (35-40mm ought do it and give you some extra just incase) bolts and 4x m4 nuts and attach it that way. Also buy a backplate for your motherboard. ( total cost will be around £4) That or sell the yasya and get something that already has bolts, a £20 cooler ought to be able to match the Yasya ( it's more of a pretty cooler rather than top performer)

Tower coolers should never be attached using only pushpins D:

That and it's REALLY easy to damage a motherboard using push pins, if you don't get one right ( but you think you have) and continue to push the motherboard will bend, ALOT.