Hmmm... Interesting that you didn't get any power to your peripheral devices. If it was just the vid card going bad I would've expected your peripherals to be unaffected.
On somewhat related note, back in the day I had a MSI P4N Diamond and it would never power down on it's own. It would shut down Windows XP but would never actually shut off the power. I always had to manually hold the power button to power off or hit the reset button if all I wanted to do was reboot.