1. Right click to your network interface at the right down corner:

2. Choose “Open Network And Sharing Center”

3. Next click to “Change Adapter Settings”

4. Right click on your network adapter and choose “Properties”

5. On your network adapter click to “Internet Protocol Version 4″ and Properties.

6. When you open the “Properties” you hit on button “Advanced”

7. When you click to Advanced button, Windows will open “Advanced TCP/IP Settings”. In that last window you click on “WINS” tab and then choose “Disable NetBIOS over TCP/IP”

You have successfully disable your NetBios!