I have a ABIT Fatal1ty MB with onboard RealTek audio. For some time now, whenever I reboot there is no audio. I have to reinstall the drivers on each boot. In the end of the driver installation there is a request to reboot my computer. So, I have to select not to reboot and the audio will work until next bootup. I've tried different versions of the drivers, both directly from RealTek but also from ABIT. What can happen when I shutdown or reboot that cause this?? It's so frustrating!