Last week I updated my PC through Windows update to the 'anniversary' edition. My sound still works, it's just not what it was.
Usually i turn up the volume to about 20 and it's quite loud, now I have to push it past 50-60 to even hear it. It's as if it's no longer HD audio as the audio quality before was better.
Sometimes the audio will revert back to the 'better' audio when I disable or update from previous but once I've restarted it then goes back to the quiet one with lower quality.
Any ideas how I can stop this happening? Driving me mad!