Sorry for another trite OP!
On Friday I set up the new AiO Cannon printer and set up its wireless link to router and computer. Yesterday my wife hassled me because she couldn't use her tablet, and I found for whatever most likely unconnected reason, I could not get on to the net. Using troubleshooters was useless, but my ISP was not down ( asked my daughter). Only one of the troubleshooter items may have given a clue doesn't have valid IP configuration/address
.
I swapped out the Billion and immediately everything works.
Are yesterday's travails just one of those things, or related to, say, the router failing in some way? If not, ho do I deal with the troubleshooter message?