Printing Errors or Lights & Stuck Print Jobs

Hello. My printer is completely non-responsive. When I unplug it and plug it back in directly to a wall socket, the screen illuminates and a loading bar appears. The loading bar moves and pretty quickly gets to complete, but then it stays there. There are a series of open circles below the bar. It stays on this screen indefinitely.  I have tried keeping the printer on in this state for over 24 hours, and no change. I have tried unplugging the cord completely from both the wall and the printer for a while, and no change. I have tried connecting the printer to a different outlet, and no change. Each time the printer powers on, it goes into this state. I hear no whirring/machinery noises as is usual when the printer turns on. The only other button that is illuminated is the power button, and that button is non-responsive as well. I left this printer alone at an office for three months without usage before I came back and tried to use it, it was working fine before then. Any help would be appreciated, thank you. Sorry if this was posted in the wrong place.