Verify for Cartridges: 

To do this it is necessary to remove the cover on the front of the printer, then remove the print cartridges. Check to make sure the cartridge that you are using for printing isn’t expired. If in any way your cartridge is damaged or has run out of ink, buy a brand replacement to address the issue that has led to your HP printer printing either in color or black. Even if you’re experiencing issues with printing in black or color, your HP printer printing black or color, you should try cleaning the print heads several times it is because of dirty print heads.

Like every other printer, the issue of the hp printer default password is not a new issue for printer owners.