Reinstallation of Norton after reinstalling Windows 7 and 10

Hi After discovering that my computer was not obeying the command to shut down, I went to my tech support for the computer company I bought the system from and they spent some time trying to discover why that was going on.  After a few attempts to resolve the problem, It was recommended that I re-install my former Windows 7 and then re-install windows 10. Do I need Norton Tech Support to help me re-install Norton into my system all over again too?