No video signal from display port work around
A work around for pc not displaying video caused by monitor sending power to the graphics card through displayport.
My solution- got an amazon basics 4k displayport cable and the problem went away.
Work around: Just unplug the displayport plug it back in then turn on the PC
Motherboard: MSI z370 Gaming PRO Carbon AC
PowerSupply: EVGA 1300 G2
GPU: EVGA GTX1080ti FTW3
CPU: Intel 8700k i7
RAM: Gskill 16GB 1 Dimm
Case: Phanteks Enthoo Pro TG PH-ES614PTG_BK
Monitor: Samsung LU28E590DS/ZA