Hey, order66! What’s the behavior of the game not launching? Is it stuck on “game is running”? does it flash a black screen, then close? Are there any crash reports after?
If you have or had razer on the system, it could be causing the launching issue.
You may need to restart after the steps. If the problem continues or there is no Razer device on the system currently or prior, please include a DxDiag file. Copy and paste the text file created and paste it between two ~~~ like so:
~~~
DxDiag Here
~~~
If you have issues pasting here, use Pastebin and post the end of the link. (ie. 123456 for pastebin.com/123456)