This is a complex problem that is seldom fixed in the first try.
There are many possible reasons this is happening and the contributing factors vary for every individual computer.
Lets see if we can try and repair the internet connection.
Click Start, click Run, type netsh winsock reset
and then click Okay.
When the Command Prompt flashes, restart the computer.
Note: If you have a program that no longer functions correctly after you follow this step, reinstall the program.
Also see if there is anything in this Micro$oft Article that helps: Page Cannot be Displayed