Gmod crashes when it starts

Hello guys, i’m here because i got a problem with garry’s mod.

When i launch the game, i got a blue screen with a “loading” in the bottow right, and after 3-5 secs the game just vanishes and no error, no answers lol

Here’s the dump file if someone could help me i would realy appreciate it

http://dumps.metastruct.uk.to/dumper.py?download=A5vxMN0_JZl8z9NMUQ8kBCW8cfET6vOcN6c6eF-lyFjp2yaPsDamjIyFV6ODmAPGHCXV3sWymIzaWTEHEmT6mZBRV0UyyYHllLu2BXiU5wkFgIbXqM4p2EQoGOFDxx45nREfZyK8iXkxQyLFgXHP1JNfdnGrcIZnFBSM6XzRMUU=

anyone can help me ?

Try -dxlevel81 in a Steam Launch options.

already tried , it’s not working :s

I’m having the same problem here, are there any reputable fixes available?