My DS3 came with the F1 bios. It booted right up with a E6400 and 2x1GB of OCZ EL Platinum PC6400 (2.0-2.1V) installed. I flashed to the F4C bios and now it won't even POST anymore. The fans start to spin but the board immediately shuts down. Clearing the CMOS doesn't help. I wonder what Gigabyte changed in F4C to cause this problem? I'm assuming it's related to the ram so I guess I have to go get some cheap DDR2 and see if it will POST with it. This sux.