hello im am catman xd

Ah, hello there. Well, I don't have any problems with lauching this game right now, but I had this one before too, and then somehow this problem was solved, I don't even know how did that happened, but I was trying to launch this game few times until it worked and somehow it did (BTW I was doing it in Windows 10). I don't know why it doesn't work on your computer, but I think you may have some issues in it.

Same thing, but I need a better PC, because my laptop's memory is low

I have over 300 modson gmod and my laptop somehow can run all of them lmao

You may beat my 280 hours if you want, because I won't play gmod anymore until I get a better PC

never thought I could find someone who could beat my 151 hours on gmod, but I stand corrected.