I have a 14 month old HP Laserjet Pro 400. I had it turned off for a couple of months. I turned it on and I have a "58.04 Error Turn off then On". I have turned it on and off many, many times and nothing is changing. I unplugged it for a spell, same thing. Plugged it into the wall and not the power strip and even tried a different power cord but am still getting the same error message. This is so frustrating. This was not a cheap printer either. Any assistance will be appreciated.