I have a hpdeskjet 5550. Just decided to stop printing. All troubleshooting comes up with is: printer is off (when it's on),
error code USB01. Have tried disconnection and reconnection. Run thru all available troubleshooting offered by Win7 and HP. Come up with nothing. I am not terribly computer and printer savvy. Kinda like a first grader thats 73 yrs old !
Need help. Thanks