Had issues with my NVIDIA GPU running on Windows 10, so i downgraded back to Windows 8.1. The previous issues have been resolved, but in place of them, I am getting a BSOD which occurs only 30 seconds after signing in after restarting. After the BSOD happens, the listing for my NVIDIA GPU in device manager is gone. The only way to get it back is to take apart my laptop and re-seat it. Then, after 30 seconds, it BSODs with VIDEO_DXGKRNL_FATAL_ERROR, then is gone. I'm currently running off of my integrated Intel card, and it works fine. Does anyone know what is going on?