L4D1 wont work

[Bjørn Hudson Hagen]

Hello, i need some help. I was playing with 3 friends on a campaign on L4D1 and in the middle of the game the character i was playing started to move on its own for a while, and the game crashed to the lobby. It was a very weird thing that happened. We started a new one to try again and now when i press any button or the mouse button the game frezes and starts to load again very slow. After the loading is done, the game just crashes to windows. Tried uninstalling the game and installing it again, same thing happens. Please help.

[Bjørn Hudson Hagen]

Tried the thing you said army guy, and it worked. But now my mouse is going in the wrong direction as i want it to. tried to go to options and see if i could work out something there. pressed the reverse mouse off and on, but nothing works. how to fix it? Thats why i hate steam updates, it ♥♥♥♥♥ up games for ppl. As long as things work, leave it alone.