HP printer assistant is a software that comes with your 123.hp.com/setup printer. It guides you during yourprinter 123.hp.com/setup & provides assistance in scanning, ordering supplies, checking ink levels & more. The printing information in the Windows and HP printer assistance gets lost, when you go on upgrading the Windows on your computer. If that happens, you should use HP printer assistant for reconnecting to your computer as the new printer.
Reconnect your printer to your PC and ensure stable online connectivity with a continuous flow of electricity.
Uninstall any HP printer software or driver
Later, you must download and reinstall the updated drivers from HP's website.
Go to the official HP page and from the main section, go to the software and driver download
Choose your printer model and click on "submit"
Follow the on-screen direction to download and install the setup
Once the installation completed, your 123.hp.com/setup printer is ready to use.