yesterday i discovered that ccleaner had a driver updater in it. I used it and now all of my audio drivers are gone. needless to say i did not back up prior to using the driver updater. Has anyone else had this problem and how did you repair it?
ran driver updater 4 more times and rebooted and it worked.
In case you have any additional issues see here:
https://community.ccleaner.com/topic/60733-i-have-a-problem-what-to-do-next/