So I just looked at Guru3D's site where Driver Sweeper has been since time immemorial and noticed that it was gone; anyone know where to find an up-to-date version or similar tool?
http://www.softpedia.com/get/Security/Secure-cleaning/Driver-Sweeper.shtml What's wrong with that version?
If it's for Nvidia drivers, I would check the box "Clean install", on the setup under Advance. It actually cleans up every trace of Windows default drivers and itself, restart your system, and clean install everything again. And at the same time you can remove Nvidia 3D stuff, if you don't have it.
http://phyxion.net/Driver-Sweeper/Driver-Sweeper/Version-3-2-0/Installer.html Use the Phyxion version, just as good