If your DNS is not responding then how made this post ? Anyways check these maybe they will help http://www.wikihow.com/Fix-DNS-Server-Not-Responding-Problem https://support.microsoft.com/en-us/kb/2779064
Try those steps try troubleshooting if still not helps contact your ISP cuz this happens with me a lot too.
It is too easy, Just run ipconfig /flushdns command then restart your computer, Her eare some more guides https://www.techunblocked.org/2016/...inished-no-internet-error-chrome-windows.html http://www.dnsprobefinished.com/dns-server-not-responding/