Can't Run My Gmod, Help me

[Baylife]

I've tryed to run my Gmod some times now and it still dont work here is the error:

Error!

SteamStartup() failed: SteamStartup(0xf,0x0036E0F4) failed with error 1: failed to take master pipe connection lock
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Help me

[Kitten on Crack]

Restart your steam and that should do the trick, if not try restarting your computer. If none of these work post back and we will figure something out.