I've printed that out Ket, and I'll disable it when I boot up in safe mode tomorrow morning. It would be nice to get some sort of message explaining what's happening wouldn't it? Apart from the first boot up problem, it seems to have become more stable again in recent days. The only other time it happened yesterday was after leaving the machine switched on unattended for a few hours. When I went to use it the display vanished. I rebooted but there was no beep and it ended up with a blank screen. I booted yet again, got a beep, and Windows refused to fully load. The 3rd attempt was successful though and it was stable for the rest of the day.