Random PC crashing

[Superboyaya]

My friend's pc keeps black screening when he is playing a game. Its mainly really cpu intensive. I had him download cinebench to see if it would crash while it was running. It is a prebuilt pc so im thinking it is the power supply. It happens when there is a lot of power draw on the pc. A lightweight game does not make the game crash. He has an i7-6700k not oc.

[Mykie]

With black screening, it sounds like the GPU cannot handle the game. But to be sure, post the PC specs and the game.