First, the basics:
Motherboard: Gigabyte X58A-UD3R (BIOS FH)
CPU: Intel i7 980X (not overclocked)
Video Card: GeForce GTX 580 running driver 306.97 (latest)
Memory: 6 x 4gigs Corsair (CMZ8GX3M2A1600C9)
Windows 7 Pro 64 SP1
My computer has been running fine for 2 years and all of a sudden...