How do I reset the HP Envy 5530 printer when it is not working?

To reset the printer, turn it off and unplug the power cord. Wait a minute, then plug the power cord back in and turn on the printer. You should also restart your computer as part of this troubleshooting process. (Page 3)

From the official HP Envy 5530 E All-in-One Printer manual, page 3

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