Question No display sometimes

[HappyPorts]

Good day. I have the this problem with my pc suddenly, sometimes when a I turned on my PC no display occured nothing total black. then tried to fix (like removing the ram, CMOS, GPU) then it works totally fine and played games and used the pc likes nothing happen, then after and sometimes a I turned the PC off there's no display again and do the same thing ang goes back to normal.. Idk what is the problem of the GPU or the PSU because when the nodisplay occured the GPU Fan keeps on spinning in idle without display. TIA

 

[rgd1101]

full system spec? include make and model of the psu

 

[HappyPorts]

I5 7400,MSI H110 pro vh plus, 16gb 2x8 2666mhz, rx580 , 120gb ssd, 1tb hdd and 500watts deep cool psu