If you cannot connect to the Internet, your Internet Protocol or TCP/IP may have been corrupted, and you may have to reset TCP/IP. TCP/IP is one of the core components required by your Windows computer to connect successfully to the Internet. In such a situation, even though you may be physically connected to the Internet, packets do not get transferred over the network and you may see the “The page cannot be displayed” message when you try to connect to a URL.
If your Windows 10/8/7 computer is unable to connect to the Internet, you may want to reset TCP/IP. Do remember to create a system restore point first.