I have just finished my new gaming PC as of today but as I was installing my games on steam, I finished downloading CS:GO (the first one to finish downloading) and then attempted to play it and try it out but as I attempted to do so, it gave me a flicker of a black screen. As I tried to start the game again, it gave me an error saying that the application was already open even though it wasn't. It linked me to a support page but all the steps have been unsuccessful! Need help ASAP!!!!!