When I turn on my computer, I can only print one document (on my Canon BJC-5000) and then I have to restart the computer. The next print job returns an error message that says the printer is not there, as though it were unplugged (check for loose cords etc.) It works fine provided I restart the computer everytime I want to use it. The printer is only 6 months old and hasn't been used that much. My OS is Win98 and I downloaded the latest driver.