Hi, I'm Bhavik. Welcome to JustAnswer. I'm reviewing your question now, and will reply back ASAP.
Please try this :-
1. Turn off printer2. Hold down Resume button and press Power button.3. Keep holding down Power button and let Resume button go.4. Press Resume button 2 times then let BOTH buttons go.5. Green lights will flash and then stop blinking.6. When green lights are solid, press the Resume button 4 times.7. Press the Power button and the printer should turn off, if not, press the Power button once more.8. Your printer should respond as normal.
You need to take care of waste ink tank now.
Try this as well,This could be one of the reason :-
1) go to control panel/printers & click on the printer. Run as administrator and Cancel all print jobs.2) open printer front. The ink cartridges automatically center. Flip the little blue print head flippy thingie (I believe that's the technical term) to the right, then back to the left.3) Press and hold the two buttons on the top of the printer for about ten seconds. Then do it again just because you're frustrated.4) close the printer. Then go in and do a "Print Head Alignment" from the maintenance menu of the Printing Preferences option.