Hey There, I am Sofia Carter. Try cleaning the printhead if your HP Printer Not Printing Black. A Printer Maintenance option is often found on an HP printer's control panel. From here, you have the choice of selecting Deep Cleaning or Clean Printhead. If you select that option, you might get a page printed with a pattern output for various colors. So make sure there is paper in the printer before deciding to clean the printhead. Consult your printer's user manual for more thorough instructions on how to clean the printhead.