steam has a common startup but when you open the screen it is black. When you wait for the game to start, the computer ends up shutting down. I emphasize that I was playing Dayz normally two days ago, but now this Black Screen is happening.
I have already checked the integrity of the game files; I reinstalled the operating system; I updated the operating system;
I disabled the protection firewall; I gave permission when I tried to test with the firewall on. However, there was no resolution of the problem. I wonder if it is possible to solve this problem. Thank you for your feedback! See you later...

Sorry for the text, I'm using the google translator. I think something is going to go wrong.