Within my last 2 sessions, my audio has turned off. The first time I restarted, and it began working again. Then the next time, it did the same thing. I did some diagnostics and the Status on my Audio Controller says it "Recieved Master Abort." (If that even means what I think it means..logic says my computer shut off my audio for whatever reason.) What could be causing this, and what should I do? Update: If I log off, my sound returns..I don't even have to restart.