Have you tried hooking it up to another computer to see if it will printer from another computer? I don't remember offhand, is it USB only or USB and Centronics? If it is USB only, make sure you try multiple USB ports on your PC. If that doesn't work make sure that you try a different USB cable. If it is centronics as well, get a standard printer cable and see if it will print that way. You didn't state, so I'm guessing that the printer was properly detected and properly loaded the drivers when it was connected? If none of the above work, then it does appear that you may have a bad port on the printer that is not receiving data and the printer may need to be replaced.