You can troubleshoot an HP Printer In Error State by setting the printer in default mode. You can do this by, In the search bar of your windows start menu, open a ‘run’ command dialog box. Type ‘control panel', then click OK. On the control panel, open ‘devices and printers’ From the list of printers, go to your HP printer and right-click on it. Now press ‘set as the default printer, and your problem is solved. A green mark indicating that ‘your printer is set as default’ will appear on your HP printer icon.