Hi. My name is***** you for your question and the opportunity to assist.
Do you have a Windows computer connected to your wireless right now?
If your Kindle was previously connected but can't now it may be a router issue.
Leave this page up and pull the power cord from you router for 60 seconds.
Then plug it back in. Once it starts up you'll be connected again on this page.
Do this on your Kindle while your router is unplugged: Hold or slide and hold the power button down for 45 seconds and restart the Kindle.
Then go into your settings, make sure wi-fi is turned on and check if the Kindle can see any wireless networks.