Asus Z170 Issues NEED HELP- Not Posting or Turning on

Apr 6, 2018
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My Friend and I just Built his PC today, It was a over phone help. I have built 2 PC's myself so i know what goes were.

My issue is When he turns on the power supply ( Everything is connected and hooked up) and hits the power button on the front of his H440 nothing happens, no fans going, no Qlights on, no post, no power pop (AKA A Short) The green light is on when he hits the PSU ON switch and it is the MOBO has power light. His Keyboard and mouse also light up, so its not the Power supply. The thing just wont Start, so we cant even get to the Boot/Post screen

He has a
-Z170-Pro
-6700k
-16gb ddr4 3000
-ax860I psu
x62 water cooler
h440 case

Any Help Is Needed, I cant test stuff but if you guys could please give ideas.