If both operating systems are producing errors it's almost always a hardware related problem. First, check if the power supply is delivering enough power. A broken psu can cause hard disk problems. The nforce 4 is actively cooled. Check if the fan is still running! Since you're running 3 disks maybe it's an issue with one of the drives. Try booting with one disk connected to see if you can reproduce the problem. If everything else fails return the motherboard... Klaasjan
