Audio is not working

I did find a Restore Factory BIOS. However that did not help anything, Still no sound. It did however give me a scare because the first 2 trys the system did not want to boot.

Sorry to resurrect an old post, but did you ever find a fix to this issue? I have been fighting the same intermittent issues and despite searching for months, the only solution people have been giving are related to drivers. As you know, however, the driver won't install if the device cannot be detected in the first place.