Hi guys, before this i use Windows 7, out of sudden my laptop update itself to windows 10. now some of the website i cant open. how to unblock the DNS? usually i just use the code from Internet Protocol Version 4. the code still same but it wont work. how?

What is the dns ip you're using now? Google's public dns 8.8.8.8, 8.8.4.4 should work.

1) Go to the Control Panel
2) Click on Network and Internet
3) Click on Network and Sharing Center
4) Go to Change Adapter Settings
5) You’ll see some network icons here. Select the network you’re currently connected to and right-click on it. Select Properties.
6) Click on IPv4 and select Properties.
7) If “Obtain DNS server address automatically” is selected, click the radio button next to “Use the following DNS server addresses:”
8) Now enter the DNS addresses you want to use.
9) Click on Ok and Close.
Your DNS settings are now changed on your Windows 10 PC.

I hope this helps!
James Cutt

For what purpose?