My PC is randomly shutting down when playing specific games!

Hello !

I am dealing with this problem for a very long time! I have:
-1050ti 4gb
-i5 2.3 GHz
-8GB DDR3
-60hz Monitor

And with these specs i can run games like Rainbow Six Siege , Overwatch , World Of Warcraft etc. with no problems at all!

But when I'm playing Minecraft or GTA V , my PC shuts down completely and boots right back after 5 secs , this could happen after 2 minutes or 2 hours of playing these games it's completely random!

My CPU and GPU temperatures are ok , and my power supply works well (Note my machine can run Rainbow , but cannot run MC
without shutting down....)

Some help please , Thanks !
-Zileyy