What should I do if I cannot print from my HP Photosmart 5520?

First, check for error messages and resolve them, then verify the printer is set as the default printer and is not offline via the Windows Devices and Printers menu. If still unable to print, try resetting the printer by turning it off, unplugging the power cord, waiting a minute, then plugging it back in and turning it on. You can also check and manage the print queue or uninstall and reinstall the HP printer software. (Page 3)