maybe one of the RAM is fried. Try putting one in. sees if it registers. Then take it out and use the other one.
a couple of months ago i bough parts for a pc but i never built it and a week ago ibought 2 Corsair Vengeance Pro DDR3 1600MHz 8GB
sticks and yesterday i got time to build it and when all of it was isntalled it sayd that only i had 8gb of ram and i put the ram in dimm_a1 and in dimm_a2 on asus maximus vi extreme mobo tell me what i should do
maybe one of the RAM is fried. Try putting one in. sees if it registers. Then take it out and use the other one.