If your HP printer all at once stops working or its output is lacking black coloration, then you definately want to carry out some simple troubleshooting steps to fix it. Further, a cartridge trade also can restore it as a faulty cartridge can prevent it to feature easily. To know more you need to visit on this link: HP Printer Not Printing Black. Check what reputation is showing among your HP printer and your computer. Make certain your printer is nicely related along with your pc. Make positive the cable is regular. Restart both printer and computer and re-connect them