AnyarThe obvious question: Have you done anything to your computer recently around the time TF2 began crashing?
Try running without your custom folder and use default settings (there's some launch option that does this, maybe -autoconfig).
Do other Steam games work?
I haven't installed anything new and everything on steam is running perfectly. I'm still running windows 7 and maybe my drivers on my card isn't updated(?). Not really sure at this point. Oh, and I've deleted the custom folder and ran the launch option command still not starting up.
To be a bit more specific on what happens, I'm able to get to the loading screen after the valve logo screen then it crashes.