1- Log in to Windows with an Administrator account. If your account doesn’t have Administrator privileges, you may not be able to adjust your DNS server settings.
2-Open the Start menu and select Control Panel.
3- Select Network and Internet, and then Network and Sharing Centre.
4-Select Change adapter settings in the left-hand column.
5- Right-click on Local Area Connection and select Properties.
6- In the Networking tab, click once on Internet Protocol (TCP/IP) to highlight it, and then click Properties.
7- elect Use the following DNS server addresses and then enter the following:
Preferred DNS server: 220.127.116.11
Alternate DNS server: 18.104.22.168
8-Click OK to finish.