Intel DZ77GA-70K motherboard MB will not recognize GTX760 card with 32GB of memory i

PC Specs:

DZ77GA-70K Intel MB

Corsair Vengeance 32GB (4x8GB) DDR3 1600 MHz (CMZ16GX3M2A1600C10)



This will sound a bit strange, but I've been using my GTX760 card in my PC with an Intel DZ77GA-70K motherboard for over 6 months, with 16GB of Corsair memory (2x8GB). I upgraded to 32GB of memory, using the same Corsair Vengeance DDR3 memory as the original memory.



I just installed the memory, and I fired it up, and the GTX760 did not display anything, but here's the weird part.... The PC continued to boot normally.



I shut down, took out the memory, and rebooted, it worked properly but with 16GB.



Shut down again, put in the new memory, but took out the old memory. It worked properly but with 16GB.



So I shut down one last time, put in all 32GB, and this time, I plugged in the HDMI cable to I could use the built-in graphics, and the PC is working normally, and it recognizes all 32GB of memory. However, in that configuration the GTX760 is ignored by the motherboard.



To answer the next obvious question, the motherboard is already at the last version of the BIOS dated 5/13.



So I'm not sure where to take this issue. Obviously the MB works fine with 32GB, but not with the EVGA GTX760.



Any ideas?