Question No Display even when Computer is on

[Ihtasham]

Sometimes this weird thing happens to my PC when I am using it, the display would go off randomly, keyboard lights would not respond but the Case light will be on, GPU fans will be running, Case fans will be running. I had to restart the PC using the power button to bring back the display. Can someone explain whats wrong ?

 

[NightHawkRMX]

Full system specs?
Make and model of PSU?

 

[Ihtasham]

Full system specs?
Make and model of PSU?

AMD Ryzen 5 2600
16 GB DDR4 3000 Mhz RAM
ASUS PRIME B450M-K motherboard
XFX RX-580 8GB GPU
ANTEC BP 550+ PSU