Steps to Troubleshoot an HP Scanner not WorkingSome minor faults with the HP scanner are probably the source of the problem. Before continuing, we recommend that you try the following methods to resolve the HP scanner not working issue.1. Check to see if the scanner is turned on.2. Examine the power cable and outlet.3. Check to see if the USB cable is properly connected (Try Reconnecting It With The Computer).4. Check To See If The Computer Recognizes The Scanner.