Any ideas? just put a system together(posting on it now), 6700k evga z170 ftw, 16gb gskill 2800ghz ddr4 2x8gb. So the issue is I couldn't get the system to post with both sticks of ram in, the error codes would flash north and south bridge codes and loop, tried all dim slots with a single stick and lucked out with dimm 3 as the magic number. once in the bios I tried to change the clock on the ram from 2133 to 2800 and it brought me back to no post. I cleared cmos and started over. I have the system running stable on one stick but cannot run dual channel or any other single slot. please drop me some ideas.