The card  run fine  before I DL the Fan Unlocker v1.0 from the forum. After running my computer doesn't detect the graphic card. I have to switch back on my onboard mobo card. I check in on my display adapter under gtx 550 ti it said window code 43. I had try uninstall then reinstall even format my pc but still have the same problem. I test it on another pc and it can only boot to safe mode with a lot of line on the screen.