Gmod crashing with no reasons?

So I recently got a new PC all that I need to say is that i have Windows 8.1 because I can play the game.
anyway so i’ve deleted every add on and deleted the game and reinstalled it, i can play single player but only for a while like a hour.
It just randomly closes with no errors, i’m also getting this with CS:GO after like 45 mins I get a error saying cs:go.exe has stopped working.
Can anyone help with the gmod thing!? <3

Have you verified your game’s integrity cache?

You are posting in the wrong subforum.
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