It's highly possible you got a damaged HuCard. They do exist, I've experienced it firsthand, and usually behave similar to the pics you've shown. If that's actually the case, you are out of luck-- you need to chuck it and buy a new one. No one knows what causes the "damage" but I bought a factory sealed Ghouls 'n Ghosts (SuperGrafx) once that was bunk straight out of the shrinkwrap.