Garry's mod start up crash

I have had Garry’s mod for about 6-7 months, and I have never been able to get it to work. At first I was thinking its was only a temporary problem and would be resolved in a timely manner. But now, I think it is not a well-known problem, or not a common problem.

The problem is this

When I launch Garry’s mod, I get the blue loading screen (No facepunch logo) , but then it stops, not showing anything more then just the blue screen. then I see the crash description. The crash description is this

**Couldn’t load
C:/Program Files(x86)/Steam/steamapps/common/GarrysMod/garrysmod/bin/client.dll
Reason: The specified procedure could not be found

Please try again**

I have no addons in my Garry’s mod, and this has been an ongoing problem since when i first got Garry’s mod.
This does not create a crash log, is this just a problem for steam of is this a Garry’s mod problem

If you need more information about this problem please tell me.

Thank you,
Crixes

Have you validated your game cache by right clicking it in your library, going to properties, local files, verify integrity of game cache?

Try this: http://forum.facepunch.com/showthread.php?t=1368004&p=44253286&viewfull=1#post44253286

Thank you, it worked for me!
Glad there was a fix for this problem