Ok I have issues with my sound not working. I repeatedly re-download my realtek '97 codec and it works for like 10 minutes and random stops working on my computer each time I install it, and now it just doesn't work at all.

And I keep getting messages at start up everytime I install the codec saying New Hardware Found: Media Controller (or something like that) and it says install hardware but never works and freezes.
Here's my info from Belarc (tell me if you need more):
System Model
HP Pavilion 06 DF247A-ABA 725n 05/1211RE101EXPLO
System Serial Number: MXZ33700V0 NA101
Processor a
2.00 gigahertz AMD Athlon XP
64 kilobyte primary memory cache
256 kilobyte secondary memory cache
Main Circuit Board b
Board: ASUSTeK Computer INC. A7N8X-LA Rev 1.xx
Bus Clock: 133 megahertz
BIOS: American Megatrends Inc. 3.17 02/24/2004