Not too long ago I tried to transfer a Metroid TI game to my TI-84 plus (normal edition, if that matters). This caused the thing to go insane, format itself, and glitch up. Since then my memory menu ( + ) stopped working. And only today it started showing an error screen saying "error: memory" at random moments while I'm using a program, including programs I made myself and other ones which all worked fine before. I tried garbage collecting, I tried the alternative resetting way (take out AAA batteries, hold for 10 seconds then put batteries back in and turn calculator on) but nothing worked. Do any of you know how I could fix this?