This thread might exist but I didn't look so I don't know. Sue me.
Anyways, I have Realtek HD Audio Card and I have no sound whatsoever. It's maxed in game's settings menu, and in the launcher I didn't click "No Sound" button.
All drivers up to date.

Make sure DirectX is up to date (http://www.microsoft.com/download/en/details.aspx?id=35) and you don't have volume reduction turned on (http://i6.photobucket.com/albums/y237/supsuper/faq_communications.png).

Still nothing.