MSI Krait Z170A Motherboard Won't Power Up

When I try to start the board with the pins, nothing happens. No fans spin, the power supply doesn't do anything.

Board: MSI Krait Z170A Gaming
VGA: PowerColor R9 390
PSU: Rosewill Photon 750 (Single rail 12v)
CPU: Intel Core i5-6600K 
MEM: [color=#222...