I was using my PC as I normally do when the monitor suddenly turned itself off, and the keyboard froze up. I manually turned off the computer and PSU, and when I turned them back on I received the messages in this video:
http://s105.photobucket.com/albums/m...RRORsCREEN.flv
I had received the fallback error once before when the last HD failed back in February. It is most likely the disk, but I wanted some second and third opinions.
AMD Phenom II Black Edition
ASUS M3A79-T Deluxe Edition Motherboard
Seagate Barracuda 1.5 Terabyte Serial ATA HDD
Sapphire Radeon 4870 X2 Graphics Card
Corsair Dominator DDR2 RAM 4GB
Antec Twelve Hundred Case
Windows Vista Ultimate x64 Bit Edition Service Pack 1
Corsair HX1000 Watts Modular PSU