gigabyte x79-up4 bios freezing issue

Legonut

Honorable
Apr 6, 2013
2
0
10,510
My computer freezes after the ud5 screen. There is a black screen with an underscore at the top. Keyboard (ps2 and usb) gives not response when del/f12 are pressed. Neither of my gtx670s will send video but my 8300gs will. I have removed the battery and cleared cmos.

System specs:
I7 3930k
X79-up4
Rosewill capstone 750m psu
2x gtx 670s
4x samsung 4gb ram

All components except for the cpu and motherboard have been tested and are functional.