When I power on the printer, I get an error (B882D41C) and then a white flashing screen.
Edit: I think I fixed it. For anyone else with this problem, here's the solution. I believe my problem was corrupt firmware, as I was changing something through the web configuration when the connection was lost, meaning the firmware writing was interrupted. I had to keep powering on the printer, letting the cartridge tray be accessible and removing a cartridge, then restarting the printer and letting it see there was one missing, replacing the cartridge, letting the printer see it, and then it would sometimes bring me to the main menu. You then have to go into support mode by pressing back arrow, home button, and back arrow twice more. Do this very quickly or else the error will pop up again. You need to go to the resets menu using the arrow keys and do a semi-full reset.