Onboard Audio Problems

I just put together a pc for the first time, and everything seems to be working fine. Yet, I realized an audio problem in certain games (Battlefield2, FEAR). There is a static/crackling sound as soon as I start the games up. When I play music, it's clear, along with other games. I tried installing the newest realtek driver (the one that came with my mobo was from 04), just to get an error halfway through saying "Microsoft bus driver should be loaded in your system before installing....". I have installed all drivers that came with the motherboard (chipset, ect.), updated the bios to the most recent, and have windows up to date. I am hoping an updated driver will fix the problem, but I won't know until I can figure out what/where is the Microsoft bus driver? Any help to fix this would be appreciated (fix the problem all together, or at least get the latest realtek driver to install!!!

Asus A8N sli premium mobo
amd 64 3800 x2
6600 gt pcie
2 gigs ram
windows xp pro
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KenneniahConnect With a Mentor Commented:
If not using the latest chipset driver, get it from http://www.nvidia.com/object/nforce_nf4_winxp32_x16_6.85
See if you can find some help here:
Quote:  Clicking and popping are usually caused by many factors. Some of them include:
motherboard noise, graphic card interference, USB devices, PCI latency:

AbsntmindAuthor Commented:
Thanks for the link. Yet I have come across most of that info, and it pertains to constant static/crackling. Mine only happens with certain games (that I have dicovered so far), others play fine, along with music. The only thing I can think of is trying to update to the latest driver, since it seems only "newer" games are causing it. But I can't, do to the problem I listed.
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There is a slight problem with AMD 64 dual core processors and Windows. Most of them that I have run into (including some sound issues, and memory leaks in some programs) have been fixed by installing AMD's own drivers for the processors.

2nd from the bottom (1.2.2) on this page

Or direct link to the download...
Also which drivers did you try for the Realtek? If not from Asus's website, get them from...
http://dlsvr01.asus.com/pub/ASUS/misc/audio/RealTek/ALC850_V51005900.zip   (dated 10/17/2005)
AbsntmindAuthor Commented:
Sorry for taking so long to get back, been working long hours. The last solution worked. Funny, I though I already updated all my drivers. Anyway, thanks.
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