Ok, so I have not had any problems with my calculator until I (very regretfully) installed an app called MICROS. It is an app whos basic function is to edit the hex code of your calculator. I did not make any changes within MICROS, but every time I launched it, something seemed to go wrong, but a simple ram reset would fix it.
I uninstalled it, to free up some space for some games, and suddenly I am unable to use various functions of my calculator. I am unable to access libraries, and my calculator seems to dislike IF:THEN statements. I am also unable to use the RCL feature to copy programs into each other.
TI 84 PCSE
DoorsCSE 8.2 installed (nothing seems to go wrong in this app, except program execution)
Lowercase Enabled (through DCSE 8.2)