Hey There, I am John smithee. If you wish to perform HP printer troubleshooting, the first thing you need to do is run the HPPSdr.exe file from the folder on your computer where it was downloaded. Click Start once HP Print and Scan Doctor has been opened, and after that, select your printer from the drop-down menu. If your printer is not seen in the list, make sure it is turned on and then click the "Retry" button. If there is a problem with the connection, make sure to follow the directions that are provided in the tool