Suddenly getting error message says print cartridges not compatible with printer. Googles fix and tried several recommendations. Took cartridges out, powered off, unplugged, waited, etc. Finally one seemed to work, with the remove cartridges, unplugged power source from back of computer and wall outlet, then plug back in, etc. It printed one page, then same message displayed. any ideas would be appreciated. It's two years old but gets minimal use. Thanks.
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