Hello!Thank you for your question. I am Shefin and I look forward to helping you with your issue today.
Has the issue started after installing Windows 10? If so, have you tried reinstalling Norton?
May I know the Norton product and version, you are using?
S H E F I N
I apologize that we have not done anything in your computer. We are experts from justanswer.com.
Are you able to open Norton 360 and update it?
Are you able to run a Live update?