Epson ET-2726 printer fails to respond

I have an Epson ET-2726 printer that won't respond much. If I try, for example, to go into Wi-Fi Setup Wizard I get the message Printer busy. Please try again later . Trying to print (Wi-Fi or wired) says the printer is not available. If I turn it off at the power switch it says Turning off and stays with this on the display until I unplug it from the power If I try and print a status sheet by going into Settings - Print Status Sheet - Configuration Status Sheet it displays the message Starting up. Please wait for a couple of seconds before returning to the Configuration Status Sheet screen. I

Question by Matthew Williams on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.