yeah also tried a gtx 560I don't suppose you've got easy access to a team green card do you? If you do, and the behaviour doesn't exhibit itself with an NVidia card installed then it's pointing towards something in the AMD drivers (or as Sagath alluded to... something funky going on with windows trying some fancy dual GPU configs like you'd see on a laptop).
i can't find any options to disable in bios. only thing i can do is switch the primary video from auto, igpu or pci-e and I already tried thatDisable the igpu in the bios.
thanks guys for trying to help i really appreciate it and i know it is not an easy one