I just replaced my old Nvidia GTX 550 TI with a Sapphire 290x. As soon as I boot and enter my login screen on Windows 7, a BSOD with a IRQL Euqal or Less error appears. I had uninstalled my Nvidia driver before plugging in the new card, using Driver Sweeper. I tried System recovering that uninstall, but when I try to use the default Control Panel Add or Remove programs, the uninstaller never appears. Now I'm stuck not knowing what to do, I can't even download anything on Safe Mode, since it won't let me boot with Networking Mode. I don't even really know what's causing the BSOD, the card is plugged in fine.