HL2.exe Crash

I just got Windows 7 And i installled my steam and Gmod but when i try to launch it Gmod
Crashes ad nit said "HL2.exe Has Stoped Working Can i have help with this please ):

In case you haven’t figured it out yet, we’re all having this problem due to a TF2 update :slight_smile:

Oh :3 sorry my bad bro

http://www.facepunch.com/threads/1148132

Everyone is posting in here Bro :v: