I'd reinstall windows. When dealing with AMD drivers, it's impossible to completely remove them from your computer and their remnants poison Nvidia graphics performance. I don't know whether they do this on purpose or not, but that's the case, and personally, I haven't found any way at all to fix it without reinstalling windows.
Ahh okay, thanks. i guess its gonna be a 10hour back up proccess for me :L need to factory restore tbh