SOURCE: When my HP Photosmart 7150
Have you tried uninstall and reinstall the driver and the hp software? If not, this should be the first step you need to do. It's also important to clean all the components of the printer including the cartridges' metallic contacts with a cotton bud dampen with alcohol.
Well, it seems another expert has already posted a solution, if so, please ignore or if his/her solution fails, please let me know so that I can help you better.
Good Luck.
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