System properties -> Hardware -> Device Mangler (er, Manager. Sorry, freudian slip!) -> Computer -> Standard PC -> Right/Secondary-click -> properties -> Update Driver
Select driver from list -> Show all -> MPS Multiprocessor PC -> Next -> blahblahblah
Reboot when asked
Go into your BIOS
enable MPS 1.2 or 1.4, whichever is the highest your board supports, if you have a BP6 or VP6.
--Kim