For doing Canon Printer Troubleshooting, use these methods. If your computer has ceased identifying your printer or the print queue has become unresponsive as a result of a software fault, try restarting it before attempting to print something new.Alternatively, select Printers and Faxes from your computer's Control Panel. In the event that your Canon printer isn't currently listed, click the Add A Printer option now. In order to see if your computer can detect the printer, perform a test by following the on-screen directions.