Hl2.exe has stopped working whenever I start gmod.

[supercow9001]

snip

[commander204]

Take a whip, and beat it!

No really, without info nobody can help you.

[deagnetic]

I got the same problem, just bought the game today.

[editline]28th August 2011[/editline]

Okay I've figured it out

go to your launch settings and add -dxlevel 81* +mat_forcehardwaresync 0 (credit: youtube.com)

I hope this helps you.

[Titanium]

edited : not the same problem apparently