Umm, it sure seems to me that the ICBM works as advertised. You hear the warning sirens and then the whole building shakes from the rocket motor during the launch. Yes, the computers all short circuit afterwards (probably from old age and the shaking from the launch). What is your evidence that the missile does not actually go anywhere?
If you go back on the computer after the launch, it says their was an error and it was aborted. Well, it says something around those lines anyway.