Impossible issue...

[ForeshadowedDawn]

They're not steps. They're solutions. You probably fucked over Garry's Mod then. Actually, goto your options in main menu and then multiplayer. Click down the drop arrow that says "allow custom files from server" and click allow no files.

Still does not work. Reinstalled steam as well... 

You're probably accidentally running GMOD in an earlier DirectX, tends to be the cause for most people with this issue.

I aint, it is the newest version of DirectX. I think it is just that file that is messing my game up. All of the other games on Gmod work for me. It is just fearless. That annoys me the most because I've donated.