After installing NVIDIA GeForce Hotfix Driver 531.26 Ive had the control panel wont open on my streaming PC. Fine, Ill just roll it back. Except the Roll Back Driver button is greyed out, and when i uninstalled it Windows put a driver back on its own. i keep getting this:

USB Audio Device Properties
Device status:
This device cannot start. (Code 10)
{Operation Failed}
The requested operation was unsuccessful.
I've heard of DDU, but people say it's dangerous and other people say it's the only correct way. I just want to go back to the driver that worked yesterday :D What's the right sequence? what am i doing wrong??
