I have a PC that stopped posting after trying to work in a watercooling parts. At first when my issue started I switched out the motherboard for two others and that didn't fix the problem. I tested my PSU and found it to be fine so I RMA'd my CPU to Intel and after getting that back, tried it again but that didn't fix it. I RMA'd my PSU and just got it back today and when I just tried it, it still wouldn't post. The motherboard is new, the CPU is new, and PSU is new, the only thing that I haven't RMA'd is my RAM. I'm breadboarding it right now, I'm using gloves, and changed out all the PSU cords to make sure they work and I'm going out on a limb for some help cause I'm stumped.
Intel Core i7-6700K 8M Skylake Quad-Core 4.0 GHz
SABERTOOTH Z170 MARK 1 Motherboard
AX1200i CP-9020008-NA
Dominator® Platinum Series 16GB (2 x 8GB) CMD16GX4M2B3200C16
EVGA GeForce GTX Titan
XSanDisk X110 256GB SSD HDD NGFF M.2 SATA
Intel Core i7-6700K 8M Skylake Quad-Core 4.0 GHz
SABERTOOTH Z170 MARK 1 Motherboard
AX1200i CP-9020008-NA
Dominator® Platinum Series 16GB (2 x 8GB) CMD16GX4M2B3200C16
EVGA GeForce GTX Titan
XSanDisk X110 256GB SSD HDD NGFF M.2 SATA