The specific method is as follows:
First, delete the configuration folder of killingfloor2 in the document and restart the game.
Second, the problem of resolution. Alt+ Enter, go to the window.
Third, it may be because of network problems, so you can try to wait for a while.
Fourthly, solidifying in steam:
1.Steam finds the game KF2, and right-click to open the properties;
2. In general, click Set startup options;
3. Enter: -DX 10, click OK to save, and then start the game.
How to solve the problem of black screen in win 10 system is introduced here. I hope the above tutorial content can help you.