I got myself a bad GTX 560ti from a friend of a friend.... He said it just stopped working. When i got the card it was already cleaned of dust so i couldn't see if it had dust clog, but I thought it was heat issue. Tried to reflow it with heat gun and i managed to boot it in to windows and test it and it worked. Even played BF3 15min and temperature never raised over 70C, but after I restart PC, no VGA out. Got it to work like that twice. Now don't really know is it heat issue or something else? Did anyone had some similar experience?