Norton 2012 Full System Scan

I Stopped the Full System Scan I was doing, by Clicking "Stop" on the window.  I Re-Started the computer, where upon I Opened my Norton Product U.I., and clicked on "Full System Scan" under "Scan Now" and the Scan started where it had got to when I Stopped the Scan; how do I change this so it starts from the beginning again?  Or is this a fault?   Thanks!