Yeah this is entirely frustrating. I've followed all the advice and reinstalled drivers from NVIDIA and RealTek, attempted to restore to an earlier restore point, called product support at the manufacturer, etc. I mean can I possibly have taken a power hit and it fried just the right elements so that I can watch and listen to YouTube but not hear the audio from computer games? That doesn't seem very likely.
I am the point of backing up my data and restoring to factory settings.