neutralizer, i had the same thing happen just last week...i got woke up at 6am by an alarm-like sound, which turned out to be my 46.1GB 75GXP dieing on me in spectacular screetch-click glory....it was from then on undetectable by the system just like yours. I was aware of the freezer trick but i didnt bother doing that, there was nothing on tehre i particularly feel upset about losing, i knew better than to trust it with anything like that, despite the fact it worked like a charm for 18months straight. Nope, the drives on its way back to IBM and will be sold unopened on its return, whatever it may be that arrives on my doorstep.