"Game is already running" and sometimes black screen

Hi. Yesterday I downloaded Overwatch and after installation, when I wanted to run, the text “Game is already running” appeared next to the “play” button. Sometimes, when I waited a few minutes, the game started, but in the form of a black screen. I would also like to add that at the moment it was impossible to leave the game, and waiting for further development was irrelevant, because nothing happened. I have already checked all threads on this topic and tried everything, but it is still the same and the computer meets all the requirements of the game. I hope you can do something about it.

This behavior is most commonly a sign of the Razer Chroma issue mentioned here:

Take note that you may also need to hunt down these files: