How do I resolve an HP DeskJet 2700 error related to a 'cartridge problem'?

A 'cartridge problem' error suggests an issue with the ink cartridges. Ensure the cartridges are correctly installed and seated in the printer. Remove and re-seat the cartridges to ensure proper contact. Check that you're using genuine HP ink cartridges, as non-HP cartridges may cause compatibility issues. If the problem persists, try cleaning the cartridge contacts with a lint-free cloth and consider replacing the cartridges.