Wireless problems

Last night all of my wireless devices (kids computers, laptop, IPad, and Wii) suddenly stopped working. The only thing I can seem to come up with is to unplug the router and let sit for a few minutes to see if that corrects the problem. It has not.

What else do I need to do to get my wireless connection back up and running?
 
That was a good try. what was going on for all your devices just before you lost connection?
 
One kids was doing school work, another was online gaming, and we watched a movie through Amazon Prime. Since then, nothing has worked but the main computer.
 
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