Garry's mod wont launch.

Alright so, whenever I try to launch gmod, it crashes at the initial loading screen with the guy holding the physgun. It just closes, no error messages or anything. I’ve googled this problem extensively and none of the fixes worked for me. Any help would be appreciated, thanks.

I got something like this…the main menu buttons load, but it freezes and crashes two seconds later, literally.

Pair of you. Post specs.

Verify your game cache.

Verifyeing doesn’t work.