Hello supernumerary, and wecome to the HP Forums!
I see you are running into issues with your install. I would like to assist with that today.
First thing I would suggest would be to stop the installation. Once it has been stopped, I would recommend uninstalling any residual software that was put in during the failed install. I am including a document on Uninstalling the Printer Software in case you run into any issues.
Once the printer is uninstalled, I would recommend following through this document on Wireless printing center Troubleshooting Issues to ensure the printer wireless functions are still connected.
Once the printer is verified to be online, and the old software is completely removed, I would suggest restarting the computer and reinstalling the software using the HP Printer Install Wizard for Windows.
Good luck and please let me know the results of your troubleshooting steps. Thank you for posting on the HP Forums!