After changing name server for domain, you have to wait for few hours for it to propagate.

If you don't want to wait, run "ipconfig /flushdns" in command prompt to update DNS cache in your system.

You need to open command prompt as Administrator. Right Click cmd.exe and select "Run as Administrator".

If you don't see the DNS, in addition to above run below commands.

Stop Windows DNS Cache service using "net stop dnscache"

And then restart the server using "net start dnscache"

If you still don't get the website in new location, check whether you have set up IP domain name pair in your computer's host file.

Host file should be located at C:/Windows/System32/drivers/etc/

Entry will be IP followed by your domain/website name like below

123.123.123.123       yourwebsite.com

If you find it, try commenting it by adding '#' to start of the line so it becomes

# 123.123.123.123       yourwebsite.com