Problem to launch gmod

Hi everyone!
(By the way sorry for the mistakes i’m french :))
Here’s the problem:
Everytime i’m trying to play gmod I launch it and the blue page with loading at the bottom right corner appears then the page with the logo facepunch start to appear but it starts to bug and I have to close it
I’ve tryed everything I search in the local content, I’ve delete it and reinstall it but nothing work
HELP ME PLEAAAASE!

How about just wait until 5 to 10 minute?