How can I fix my Skyrim sound?

I'd been playing Skyrim for weeks and was almost finished the companion's questline when suddenly the audio just cut out.
It plays in the main menu and while it's loading the game, but just before the save loads, it cuts out.
It plays in menus when the game is paused but not in the main game itself.

I've looked everywhere for a solution, tried changing settings in control panel, all my drivers are up to date and I have directx 10 installed. I also tried the update patch Bethesda released but that didn't help either.

2012-02-06T15:20:29Z

No, still no sound in windowed mode

Anonymous2012-02-06T11:21:20Z

Favorite Answer

try switching to windowed mode as shown here:
http://www.youtube.com/watch?v=YI7YA38lNtU

do you still have no sound?