Clearing the cache didn't work. Not sure whats next? Any clue?

Delete the whole folder or what? HTTPcache folder had nothing in it. Just delete the whole file and reinstall or what?

No matter how many times I reinstall the game, there is no sound whatsoever. I have the volumes up and the little speaker icon isn't an x. No clue why? It just stopped one day when i was watching a youtube video, never to return despite mutliple reinstalls. Any idea what can be done to restore audio to my game?