Nothing happen when clicking Full System Scan

After installing Norton Internet Security for a week, I found that my window media player and The sims 3 game froze up when loading, thus requiring me to force end process through the Task Manager. As it is quite annoying everytime i failed to load this programs, I tried to perform a full scan to my laptop. And to my surprise, when i click "full system scan", nothing comes up. I am sure I ran a full system scan before and it did it job. So what has happened to my laptop and how can I solve it??

 

Thanks 

 

 

sorry for my poor english

After installing Norton Internet Security for a week, I found that my window media player and The sims 3 game froze up when loading, thus requiring me to force end process through the Task Manager. As it is quite annoying everytime i failed to load this programs, I tried to perform a full scan to my laptop. And to my surprise, when i click "full system scan", nothing comes up. I am sure I ran a full system scan before and it did it job. So what has happened to my laptop and how can I solve it??

 

Thanks 

 

 

sorry for my poor english