If you want to install a norton antivirus using www.norton.com/setup  then you have to go to www.norton.com/setup and follow the steps carefully.
1.  Turn on the system.
2.  Open the web browser and enter 1www.norton.com/setup on your URL.
3.  You have to fill in the details in the given place.
4.  Choose the antivirus.
5.  Click on the download button.
If it becomes difficult to you then you can connect to us, we have an expert team with us that can fix all your issues in just one phone call.