HL2 Not responding

Garry's Mod general
#1

Hey every time i start gmod it says HL2 Not responding any help?

#2

Reinstalling probably?

#3

:pirate:

Is this when you try and start Gmod? or while connecting to a server?

#4

Try to start gmod

#5

:pirate: Or, reinstall.

#6

nope still not

#7

Reinstall it.

#8

Yea i did

#9

Contact steam support.