How do I reset my HP OfficeJet Pro 9015 to factory settings?

[rkr7]

Need the nard reset instructions as well for HP OfficeJet Pro 9015. 

[rkr7 · Accepted solution]

This information is for all the people like myself who have requested HARD reset instructions because the wifi on our HP OfficeJet Pro 9015's suddenly quit working after a recent HP update. Like me, not only did the wifi get disconnected, but the wifi icon and wifi wizard also disappeared. In response to these numerous inquiries, the HP employees responded individually to the main writer that they would private message them instead of simply providing the answer. No such responses to those of us who clicked "I am having the same problem."!!! (Note this will also solve the problem if your printer suddenly stops printing only your black ink.) To restore wireless settings options, on your printer control panel, first note where the "back" arrow is (because it's not visible from the  Home screen). Now, at the Home Screen, tap the location of the Back arrow 4 times to open the hidden Support Menu. Use your left/right and up/down arrow keys to go to Resets Menu > OK > Semi-Full Reset > OK. Process should only take 30-60 seconds. If printer doesn't turn back on after 30 seconds, press your Power button. You will have to do some setup stuff (minor compared to the problem of no wifi), but you should see your blue wifi light blinking to say it's ready for setting up again. Why HP isn't more forthcoming on this I don't know, and don't care NOW THAT I HAVE WIFI AGAIN and don't have to buy a new printer! Write these instructions down somewhere because there are probably other issues it will help resolve.