The printhead appears to be missing, not detected or incorrectly installed.

[USER_0612202221]

HP photosmart 7510.  Moved printer to a different table but placed in the same spot it originally came from.  Now it displays "The printhead appears to be missing, not detected, or incorrectly installed.  I can't clear this message and it won't print.

[Kumar0307]

@USER_0612202221, Welcome to the HP Support Community! I’m here to help.

I understand you are not able to print due to this error. Kindly perform the steps mentioned in this document - Printhead errors

Re-insert the ink cartridges.

If the issue persists, I'm afraid the printhead has gone bad. Replacing the printhead may or may not resolve this issue.

• I've sent you a private message with further instructions to resolve this issue.
• In order to access your private messages, click the private message icon on the upper right corner of your HP community profile, next to your profile Name or simply click on this link: https://h30434.www3.hp.com/t5/notes/privatenotespage

Hope this helps! Let me know how it goes. 

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Have a great day!