in my tool bar bottom right hand side by the clock when u open the tool bar there a shield and it will flash blue to red with an x on it when i click on it. it wants me to down load anti virus and it says i vanurable to virus but im running norton. how to i get rid of this on my tool bar cause when im on a web side it will pop up every couple minutes. i already tried to turn off pop up block what im i missing. i need detail instruction im not that good with computers.