Norton YouTube Channel – 4.5.23
This video shows you how to run a scan in Norton to detect and remove viruses, spyware, and other security threats from your computer. A Full System Scan thoroughly examines your entire computer for viruses, spyware, and other security threats. It usually takes an hour or even a day depending on the number of files in your computer.
Source: How to Run a Scan on Norton Protection for Viruses, Spyware, and Security Threats