Only cheap video cards (like mine, too) need the txd.img file, wich contains uncompressed textures, i think. If u delete it, it will be created again when loading a game or starting a new one. But i don`t think that`s your problem.
If the game stops while loading the intro screen, do the following:
1. UNINSTALL the game , then reinstall it, if it doesn`t work, DELETE it, then reinstall the game
2. DELETE the game, then reinstall it
This happend to me 2, but i don`t remember exactly what i`ve done to fix it, so there`s an "OR"... but one of them should definitly work.