Just upgraded my GPU to a gtx 950 and it worked perfectly fine until I installed the newest drivers from nvidia. It started to immediately BSOD right after install and every time it boots up it BSOD's, problem is I can't go back to a restore point or wipe my system because I don't know the password for my windows 10 login because I've always used a 4 digit pin, so basically I'm locked out of every option that I know of....