when i boot up xp crashes EVERY time, so i do the f8 start up thing and go into last known good config, system boots, scandisk runs and its about to get into windows and i get a registry error saying something something something/SOFTWARE is corruft or some stuff like that, in the blue screen, so i run scanreg scandisk everything i can think of, reboot and i get this blue screen EVERY time... anyknoe know how to fix this?