Hope I'm not posting in the wrong section.

Before I formatted my harddrive because my computer was in complete disarray Halo 1 for the PC would run perfectly fine. Now whenever I try to play level 5 (the first snow level) it doesn't load and gives me this annoying error where it says Gathering exception data and then crashes. Come on man, really? It works perfectly fine before when my computer wasn't acting normal and now that it is the game just decides not to work?

Worst of all, I looked this problem up EVERYWHERE on the internet and all of them have left to dead ends. Aka typical discussions in forums with non-answers and no help at all. I need to settle this problem.