When faced with an HP printer that isn't printing, a systematic approach can often resolve the issue. First, check the basics: ensure there's sufficient paper in the tray and that the ink or toner levels aren't low. Next, verify that all cables are securely connected and that the printer is powered on. Check to see if the wireless printer is logged onto the right network if it is. Run the printer's self-diagnostic tools or print a test page to identify any internal problems.