i sat down to join a call this morning and my all-in-one PC was completely silent... no sound from the desk speakers, no startup chime, nothing... the speaker icon has a red X and Sound settings says there are no output devices... last night Windows installed the VIA HD Audio driver package 5.10b update, and i'm pretty suree that's the culprit... when i open Device Manager i see this:

USB Audio Device Properties
Device status:
This device cannot start. (Code 10)
{Operation Failed}
The requested operation was unsuccessful.
Ive rebooted twice and run the audio troubleshooter, which claims it fixed smth. It didnt. i dont know whether i should reinstall teh driver, roll it back, or smth else entirely. Where should i start so i dont make it worse?
reading release notes like its a horror novel