Well, I think I broke my Qix cartridge somehow when I hit it out of anger and frustration. I unscrewed the screw in an attempt to open the cart, but I can't get the thing open. So why is there a screw in the first place? I think I must have dislocated something that was keeping the chip in an unmoving position. The chip (game) works, but the cartridge is screwy, so I'm thinking if I can ever get the cart open, move the chip into my non-working copy of Demon Attack. Also, tried to get Frogger to work. I got this screen:

What is this, why does it pop up? What is its function? I did get Frogger to work by the way, by switching the system off when I got that screen and readjusted the Frogger cart and turned it back on again. As you can see, I'm really frustrated with my 800XL and would like some help.