Movie night, everyone's on the couch, i hit play on teh PC hooked up to the soudnbar and..... silence. Picture perfect, zero sound. The only thing i'd changed was installing NVIDIA GeForce Graphics Driver 398.82 earlier that day.

USB Audio Device Properties
Device status:
This device cannot start. (Code 10)
{Operation Failed}
The requested operation was unsuccessful.
the HDMI output used to show up as a playback device in Sound settings. now its just gone 馃槶 speakers on the PC work fine. what did the update do? what am i doing wrong??
