So it seems that whenever I open a source game it crashed without an error message. The only two source games I have are TF2 and Black Mesa. I have tried validating game files, uninstalling and reinstalling and even manualy deleting the game files.

Whats even stranger is that whenever I try opening Black Mesa through local files it works and is even registered through steam that it is running.
When trying to do this with TF2 it still just crashes.

If there is any known fix please tell.

(EDIT: I fixed it by using -windowed in the launch options but now I have to play in windowed mode)

(EDIT 2: I used -windowed and -noborder which basicaly makes it fullscreen)