The game will not show - can not play

Hello, when I start the game, either from Steam or as a standalone, it flickers into the log in screen, but then goes back to my desktop or the previous screen I had opened. The game will not stay up to be able to be logged into and played. I have uninstalled and reinstalled, tried on Steam and as a standalone, but each time I get the same result where the game will not actually stay up. I can install the game fine, it updates perfectly fine, but whenever I start the game, it simply will not stop flickering for a moment and go back to my desktop.