This has been happening more frequently now. Yesterday I was running normal, installed a new program that required a restart, (menu option at the end of install) and just as boot up was finished, not yet to windows, screen goes dark, the graphics fan goes warp speed. This one was persistent, just would not restart, removed all perfs, HDD's, just the minimum. No luck. Unplugged and let sit for 30 minutes, same problem. Only after I physically removed the card and reinstalled, did it start normal. Tried restart again, same problem, removed card and reinstalled, started up. I hate to go and spend some $$ for a new card, and find out it is something else. Any suggestions appreciated.