Problem with Wi-Fi, the router distributes the Internet

In General, the point is, I don't know what you've done, but have ceased to distribute an Internet on wifi phones, TVs, Curling irons, and other, as well missing the regular Internet on the computer, but creating a second connection I still did so, the first Ethernet connection constantly says network connection is missing, to remove it I can not, and every restart of the computer is forced to connect with the second connection. Also can't get the router to give the Internet, the router is working, checked with a friend. Dropped router settings, did a network reset. Windows 10