HOW TO CHANGE DNS SERVERS IN WINDOWS 7

   1.Open Network Connections by clicking the Start button , and then clicking Control Panel.

      In the search box, type adapter, and then, under Network and Sharing Center

      click View network connections.

   2.Right-click the connection that you want to change, and then click Properties

       If you're prompted for an administrator password or confirmation, type the password 

      or provide confirmation.

   3.Click the Networking tab. Under this, click Internet Protocol Version 4 (TCP/IPv4),and 

      then click Properties.

   
   4.To specify DNS server address settings, do one of the following: 

      click Use the following DNS server addresses,and then, in the Preferred DNS 

      server and Alternate DNS server boxes, type the addresses of the

      primary and secondary DNS servers.

      for fast and free public DNS servers click here

              

   

   5.check tick mark against Validate settings upon exit

   6.Now click 'OK'

        that's it and close all windows appearing on screen

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