I am sorry if I am entering this in an incorrect location. I've spent 20 minutes trying to find how to input a message in an MX410 wireless forum without success. If this is not the correct place for my problem then I hope someone will explain how to navigate over to the correct forum. The one place I could not look was in "Forum Guidelines"; my computer told me to get out of that page ASAP because of a potential virus/worm problem.
I just had my cable company come in to install a new combined Internet modem/wi-fi box. He did that then said there was also an "interference" problem. He then changed the names of the two wireless networks the box put out (the old wi-fi box also had two networks) but kept the single password we used for both networks the same. He named one network "2G" and the other "5G". He then did some swapping around of the two wireless networks our cell phones and computers connected to but did not touch our smart TV and Magic Jack (I confirmed both worked okay before he left). But after he left, I found my MX410 would not work wirelessly with my computer nor my wife's computer. The blue wi-fi light was on so I tried to enter our password. Two things went wrong. (1) the printer could not see the 5G network, only the 2G. (2) tried to put my password into the the printer to use the 2G network but it would not accept it.
My wife confimed that I had put in the correct password and that our computers are using the 2G network. Can anyone suggest the next step to troubleshoot these problems? Have already tried disconnecting power.