Black screen on client launch

Whenever i go to launch league, it successfully launches and later shows the league of legends icon, but after that it cuts to a black screen and it will stay there almost as if its unresponsive. I've tried closing it but it only closes with task manager. I've tried opening as admin and nothing so far, i launched it earlier today without any issues, I've restarted my pc and everything, this literally just started happening. Any ideas on what to do? I want to do the most that i can before i try to uninstall. Thanks!