Hi, I am cleaning a computer with an ASUS M3A78 Pro motherboard, and there is an orange heat sink with a black plaque with "ASUS". It has two black spring/screw looking things that appear to be holding it on. I think it may be over the video processing unit? (I don't know the name of it). I can't get the heat sink off. I push the springs down and it seems like it might be releasing, but I am not able to get it up or off. I am doing this because I want to apply new thermal paste, as the cpu's was dry. Any ideas? Thank you.