Question PC starts up with no display, shuts down briefly then auto restarts, still with no display ?

[TopHatterCT]

This started happening after I ended up gaming for longer than usual, maybe 6 or 7 hrs straight? At the first two or three occurences, doing a power drain fixes it, but now it's just a hit or miss. This happens usually once a day when I turn it on for the first time for the day, but sometimes happens twice or more in bad instances. Everything is fine when plugged directly to the motherboard video port. Tested out my GPU in another PC and it checks out all good. I tried plugging in another healthy GPU and the same issue still happens. What could be possibly wrong with my system?

i5-2400
Jetway H61 board
8 GB DDR3 2x4
GTX 1050
HDD 1TB
MSI MAG 550W Bronze

iGPU no driver
GTX 1050 driver

Power source - motor AVR

 

[Shtii]

Similar problem here