Computer randomly turning off.

[Jacobpcu]

So I am pretty good at Computers most of the time and this time I just do not know what is happening.

While playing games like
Fortnite
PUBG
CSGO

My PC just turns off while playing, most of the time it won't even get to the game play.

At first I thought it was the CPU or GPU over heating. It has never before and after installing a new case fan and opening the side of the computer and updating the drivers, it still occurred. It completely turns it off. I can not turn the PC back on for a while and then I have to switch the PSU on and off while pressing the on button.

I monitored the CPU temp and it does not over heat but it is hot running at around 45°C but not hitting the 54°C limit. May I please receive some help with this problem. Thank you

 

[DSzymborski]

Full specs, please.

Generally speaking, sudden turnoffs without blue screens are likely to be temperatures or power supply. It doesn't sound like it's a temperature issue, but you haven't told us anything about your PC, so I won't venture a guess.

 

[jojesa]

Could you post your system specs.
That seems like a PSU or motherboard failing. Many things could make your system crash but, there is a good chance is the PSU if the system crashes under load (gaming) when more power is required.