I checked my device manager and see that the graphicscard, SATA-controller (wich I also have had problems with) and soundcard all share the same IRQ, number 16 to be exact. It seems I can't change IRQ manually in Vista for some reason though. Device Manager says that there is no conflict but reports that they are using the same IRQ anyway... How do I change it? And Should my BIOS be set to PNP OS? I've tried both settings but I can't tell any difference.