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Lets try these steps first.. As they will sometimes fix the issue without having to replace parts.
1) take out cartridges2) take out printhead3) disconnect power and USB cable from back of printer while turned on4) move power cord to wall5) clean the electrical contacts on the carriage, printhead, and cartridges with water and coffee filter6) power on unit without parts7) when it says "missing or failed printhead" reseat JUST the printhead and see if it detects it if it does install cartridges and enjoy!
Whether or not these steps work please send a detailed reply letting me know what happened, thank you.
I strive to provide great service, and greatly appreciate a 5 star rating clicked and submitted when you are satisfied.. I always answer follow up questions.Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.