No audio device after shutdown

[dcyphure]

vista x64.

recently got x-fi fatility pro pci-e

install latest fatality drivers, works great. i can reboot all i want and still works fine

however, if i click shutdown, upon reboot, i suddenly have no audio device installed.

i have to manually remove the driver and reinstall it.

what is happening during shutdown that doesnt happen when rebooting?

i cant figure this out for nothing and is driving me nuts

please help

(note: i do have system restore and page file turned off. never an issue before but thought i'd mention it)