This is a new one on me...
I have a 40gb Seagate Barracuda that rebooted itself and failed to boot a couple of times, and then proceeded to reboot itself into some kind of weird, white, fast "matrix mode"...
Ok, I accept it's "Hospice Time", pop in a 20gb drive with OS and manage to get it open as

Drive and use Hard Disk Manager to clone it to a 36gb Fujitsu SCSI Drive...which is now doing EXACTLY the same thing...
I have a feeling it may be some kind of boot virus. I've repaired the mbr and it stays the same...
Any ideas?