Hmm... only if you've been a messin with it.. Usually a cards bios is fine although it's not unheard of. Best way to test? Stick it in a friends machine.
What about your system bios? I note that your report about the event viewer contains material relating to updating firmware. I wouldn't be surprised if this was the culprit, whatever it is....
Is your sys bios updated?
NMSUK answered that for me! It is now! Twas a bit of a nerve bender as the PC went straight to start up repair after updating BIOS and restarting it, but was there for less than a minute! Phew!! Now at v2.0 from v1.80Is your sys bios updated?