Black Screen when launching a game.

Just recently tried using melody tweaks but after using them anytime i launch a game after 2-3 seconds the screen just turns black, Not able to tab out neither open task manager the only solution is to turn my pc off manually. Tried using variety of different versions of windows 10 and 11 but all give the same result. Is there a way to fix that ? Because These tweaks make my pc super fast and snappy and i like it alot i just have this 1 problem.