I was experimenting with overclocking of the GPUs, and my main GTX 570 was always hotter than the other 570 because it sat behind it and only had hot air to cool itself with. Well, according to Afterburner, the temps would get into the 90 C realm occasionally. I just experienced some random crashed, no blue screen at all, and now, I had to take the monitor DVI cable from the main 570 and put it into the other 570 in order for me to see anything in Windows. Now, nVidia Control Panel no longer gives me the option to even set my SLI up, and according to it and Windows Device Manager, I only have 1 GTX570 listed. Did I destroy the card?