So I am using my Realtek onboard audio with my Gigabyte GA-K8N51GMF-9, but with Windows XP 64 bit the audio won't work. I have tried the drivers on the CD, the drivers from Realtek's website, and the drivers from Gigabyte's website. It just doesn't work. I have checked the connections with my speakers, the volume isn't muted, the volume is up, and the audio device is selected as active. Anyone have a similar issue?