If there is an error detected, then the HP Print and Scan Doctor will tell you which part of the process is causing the issue by marking the step in red with an ‘X’. You can perform a test scan to make sure that the devices are connected. Additionally, HP Doctor checks that the ‘Windows WIA Scan’, ‘HP Twain Scan’, ‘Registry’, and ‘HP Scan’ are functioning properly. There are similar stages examined for the scanner. If the printer does not display any disruptions, then you can print a test page to verify that the connection works. The system scans the ‘Recommended Updates’, ‘Print Spooler’, ‘Driver Check’, ‘Device Status’, ‘Device Manager’, ‘Device Online’, ‘Print Queue’, ‘Port Match’, and ‘Device Conflicts’ for the printer. A green checkmark will be next to the conditions that are okay, and a red ‘X’ will be beside the steps that triggered an error. There will be a list of points that the app will check. The application first examines the printer and then the scanner to fix issues.

The diagnostic tool searches for connected products, communicates with the selected device, identifies issues, and fixes problems.

Hp print and scan doctor for windows 8