I have a canon mg8120b printer/copier that stopped working then came back to life on it's own, worked well for awhile but now won't recognize cartridge C even though I've changed it. I've tried taking it out, unplugging, plugging back up and re inserting cartridge C with no luck, still doesn't recognize it... HELP!!! PLEASE!!! I am a technology challenged single mom of a 15 year old who attends online school. We need this printer!!! Thanks in advance...
