Hy There, I am Sofia Carter. If an HP Printer Not Printing Black, try these methods. Ensure that your devices are correctly connected to one another and that the network or cable you use to connect them is appropriate. Restarting your HP printer is another option. After completely shutting it off and unplugging the power cord, give it a few moments to cool. Further, turn on the printer after plugging the cord back in. Alternatively, updating or reinstalling the printer driver could be necessary to resolve this problem.