I have the same frustration as all the others getting the printer on line. My problem, I think, is that the printer (since it's wireless) is looking for a particular network - like xfinity - if it homes in on any other network like my cellphone's network or the other comcsast network - it won't budge.
Go to settings on the pc and make sure your network is the one that both your pc and the associated printer are the same (look at the settings on the printer as well) if not then get them set the same...it fixed my problem.....I'll probably have to atone for the bad words I used getting the printer back online