Hey, i noticed that many people have problems with their Realtek audio drivers in windows 8, as did i... After trying and trying, and trying to get it working, i rememberd that i had the same problem in windows 7. When i had windows 7 i got the problem fixed via installing sound drivers that wasnt really for my sound card. i do not know if this will work for you, but its worth a shot, right? My motherboard is an ASUS A8V-VM ( http://www.asus.com/Motherboards/AMD_Socket_939/A8VVM/ ) by the way and the drivers that made my audio work in windows 8 is the "AD200B_6570_Win7" Drivers. ( ftp://ftp.asus.com.tw/pub/ASUS/misc/audio/AD200B_6570_Win7.zip ) I hope this will work for you as well!