HaloMods "Classic" Read-only Archive

Well I think I screwed my halo cuase I used to be able to get into multiplayer but now it won't and now I tried to fix it and it won't start up now it will stay up a sec and then turn off and also those things that come u like the shader thing it doesn't come up either so what should I do?

1. Try making an understandable post.

2. Try reinstalling the Halo.

Well I mean that I would have to delete the first halo witch has some file that I can't install with it. Like if I delorted it it would not reinstall