alright, so I installed the Realtek HD audio like you said, and all these "Microsoft Audio" drivers cam up. My sound still doesn't work!
Here's a picture of what I look at with the show hidden drivers option on. I was confused on why there were double drivers...
It looks as if my Audio Codecs vanished too...
http://img129.imageshack.us/img129/7950/31991023mo1.jpg