ok heres a little trick ,put your video card in a plastic bag and tie it up tight,now put it in another bag and tie it tight also . put the card in the freezer for about 30 min,the bags keep moisture from getting on the card while in freezer.now quickly remove card from freezer and open,place a credit card or similar card on video card where you want to pry and use a small blade screwdriver to pry of the heatsink the credit card protects the pcb boardfrom being scratched or damaged