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hp c4640 ink

Printer Troubleshooting

How to Fix “ Unrecognized Cartridge ” & “Incompatible Ink Cartridge” On HP Photosmart C4640?

How to Fix Unrecognized Cartridge+Incompatible Ink Cartridge On HP Photosmart C4640

The “ Unrecognized Cartridge ” or “Incompatible Ink Cartridge” error is fairly common to the HP PhotoSmart C4640 and all other Photosmart, Deskjet, and Officejet printers. Alas! I do not have an interesting experience or back story to assert my claim but I do believe that many have come across this problem. Without further ado let’s get down to business. This type of error messages usually appear after the printer has been inactive for a lengthy period of time and/or during the replacement or replenishment of HP 60xl and HP 60 ink cartridges. Hence, this troubleshooting guide aims to resolve cases related to aforesaid issues. Continue Reading