IT's really weird, about a week ago Fallout 3 worked just fine, then randomly now i load one of my saves, then start to play. The textures are all weird and some people clothes are see-through, showing the scenery behind them, i take a few steps then the game crashes. I have tried to play on all my saves, it happened on all of them. Then i deleted all my saves and made a new game. It crashes again, It's quite frustrating really. I have no mods installed. Please help!

EDIT: All of the people clothes are see-through, and sometime my weapon stretches out to the side before crashing.