01-19-2020 12:38 PM
I have an Officejet Pro 7740 manufactured October 24,2016 I have followed the form post with directions from HP employees and and printer remains unable to print with non HP cartridges installed.
01-21-2020 09:04 PM
Welcome to HP support community.
It is not advised to use non HP cartridges, they are not tested with this printer.
So HP can not grantee the print quality.]
You can refer this HP document for more assistance:- Click here
I hope that helps.
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I am an HP Employee