[SOLVED] Random weird shutdowns

[tryNto]

Not sure where this should be posted.
My build on 9/2017:
ROG Strix B350-F Gaming
AMD RYZEN 3 1300X 4-Core 3.5 GHz
Corsair Vengeance LPX DDR4 2133 MHz 2x8gb
Nvidia GTX 1050ti
EVGA 750 B3 power supply.

The issue recently came up after 2 years of flawless operation.
Randomly it will seem as though the system crashes/freezes/hibernates/sleeps, not sure how to describe it. Monitor just suddenly goes black.
System lights are on as if everything were fine.
Tried Ctrl+Alt+Delete nothing. Holding power button does nothing.
The only way I have found to recover is to cycle power supply, off 10 sec wait, then back on, System then will start as normally expected. System function is fine till it does it again.
Hoping someone can help or at least a direction to look.

TiA

 

[Eximo]

As always, monitor temperatures.

This sounds more like a software problem though. Look in the Windows event log to see what the computer did right before it logged the unexpected shutdown event.

If you think it is hardware. Memtestx86 for the memory. You can run CPU and GPU benchmarks like Prime95, Cinebench, 3DMark etc to test for stability that way. But if it is intermittent and random, it will be hard to track down.

Power supply could be the culprit as well. Many unexplained problems arise from there. Though yours is significantly oversized, so it wouldn't likely be a matter of too little power or overheating there.

 

[tryNto]

Updated the bios and all drivers. I hope this fixes it.

 

[Mr.Spock]

reseat memory, check your cpu fan for dust bunnies and the power connectors.

these tend to work themselves free over time with heat and contraction