Sound problems...

Can someone please help?
All the sudden my sound on my laptop won't work today (on all programs). I've tried updating the drivers but it says they are up to date. So then I system restored to a couple weeks ago but it still does not work.

The volume is fully up but no sound comes out :/.

When I try to play a song on Zune I get error message c00d11ba which says that "your computer may not have a sound device, or it may not be working properly. IDK if that helps, probably not I guess.

My laptop is an HP G60-445DX.