If the Canon printer is not responding, try the canon printer troubleshooting techniques. Inspect to see if the Canon printer's indication lights are flashing in a certain pattern. Verify the power wire is correctly connected to your wall socket. If your computer has ceased detecting your printer or the print queue has ceased answering due to a software fault, reboot your computer and attempt printing something fresh. Go to your Web browser after uninstalling and reinstalling the Canon printer software.