My PC goes out without a message, but only when I play Fortnite.
It's not like that in other games, or when I'm on Youtube.
But that came on suddenly, it is not only the PC goes out but sometimes crashes my Fortnite.
GPU: Amd Rx 580 Red Devil
CPU: Amd Ryzen 5 2600
MAINBOARD: Msi B450 Tomahawk
POWER SUPPLY: 600Watt be quiet
Your PC is probably going to crash because your graphics card can't meet the requirements of Fortnite.
So it happens that your CPU is overloaded and crashes your game or even your entire PC.
Suggestion for improvement: As soon as you have started Fortnite, set everything in the settings to lowest graphics. That Renderdistance down, nice graphics on fast, etc. That makes the graphics ugly, but maybe that's the solution to your problem.
If that does not work, contact the support.
Yes, maybe a thermal problem
At the graka it can't be that's the problem I have.