Pc shuts down while start game

As title said . My pc keep shutting down when i start the game . I have read this topic https://crazypt.forumotion.net/technical-assistance-f6/login-problem2-things-t23.htm , but still i dont know which program against Cptlaucher . Any idea how to find out / fix it ?? thanks

omfg same. i do NOT understand this. a game hsouldnt shut down a computer when you run it. and my computers a decent one and new, so its not the comp