Support Audio no longer working

So i was listening to my music on itunes, and all of a sudden it started going bzzt and it stopped working. Then, I tried to restart itunes, and it says there's a problem with the audio playback. I cant hear any videos on youtube, or music in itunes, even videos and games that are on my harddrive dont play audio. i tired going through microsoft's help page, but their solutions arent working and im unsure how to check for missing drivers. so, what do i do?[DOUBLEPOST=1375383293][/DOUBLEPOST]And the problem's been solved, this can be locked now