Generic Remanufactured Toner Cartridge Replacement for HP HP 15 BLACK INK CARTRIDGE ( Black,Tri Color , 2-Pack ) One Year Guarantee Fast Shipping Good Quality Troubleshooting steps: Disconnect the printer from the computer, remove the cartridges and wait for a few minutes. Reinstall the cartridges and wait for the alignment page to print; print the page manually if it does not print automatically.