Follow these instructions to replace print cartridges.
note:When the ink level for the print cartridge is low, a message appears on the display. Ink levels can also be checked by using the Printer Toolbox available through the HP Photosmart Software on your computer or through the Print Properties dialog box on your computer.
If you do not already have replacement print cartridges for the HP All-in-One, you can order them by clicking the Shop for HP Supplies icon on your computer. On a Windows computer this is located in the HP folder in the Start menu.