Thanks for all the replies.
Sadly I can't take a picture of the card. Its an nvidia 8400.
ok, I just found it from the site linked above... thats the card 'new'.
@ghost, sadly the pegs look (and feel) to be extruded plastic or that... almost like a plastic rivit, so I can't screw it back, the actual plastic of it snapped.
@organic, I've thought of using a paperclip (or as I said crazy gluing) the heat sink back on. but it was on there Pretty darn tight, and I fear that if I try using a paperclip or that, it wouldn't be 'tight' enough or if it was it would just cause more dammage then solve.
As a whole, I honestly dont know what the problem is. I'm assuming rapid overheating, since the video card 'shuts down' after a few minutes (or seconds) of being on. I'm not TOO tech savvy so I always feel so horribly lost when things go wrong.
and thank you for the welcome, and all the aid.