L4D2 Map Loading Problem ;_;

[Artic]

I wus plying l4d2 and I luded map up and it crash to desktop after a few weeks of messing with it I can get a small little cutscene of the map and then it crashes to desktop
I thought it was cus of te muds I duwnloadded It was and it stopped doing the crashing but my addons wouldent work still ;_; and I believe they still wont came back and it started crashing again D: And its anuying



I tried everything messing with the video verifyed reinstalled did a clean sweep and dident work

Its not HDR and Shaders because my computer can run l4d2 and I never had these problems until I downloaded Mods but I removed them after this problem started and it still happens :(

PLS if anyone hus fiex and fix to addon problem pls tell me