So I got my 212+ finally, and I was doing some benchmarking on BF3 and 3dmark. I lef bf3 running on the campaign mode for about an hour to see what my max temps would be. I came back and the game was running at 40~ fps, then as soon as i walked foward, my computer froze, bf3 crashed, ctrl alt + delete wasn't responding, power button wouldnt turn off the computer, so I had to power off the psu. since then, Everything else on the computer seems to be running fine (fans turn on, lights work, etc...) but the gpu has no signs of being alive (fans dont spin, monitor is not getting a dvi signal) and I am very, very, concerned. I am wondering if this is the sign of a dead graphics card, and if so, what i did that would have killed it so fast (it is a 6850OC edition i put into my gaming rig about 8 months ago). I am going to bring it to my friends computer in about an hour to see if that gets it to work. If it doesnt work in another computer, does that mean for sure its dead? Thanks in advance, and sorry for the long-*** post.