Norton Internet Security Is Screwed Up...

My Norton Internet Security 2010 is messed up.

 

After my son was on my computer I went on it and I could not open up the Internet Explorer.  Whenever I tried to open it the internet would turn off saying something along the lines of "theirs an error windows will tell you if a solution is avaliable. " Naturally, they gave no solution. (Google Chrome still worked) Then, I restarted computer which didn't fix anything. Next, I opened up Internet Explorer No Add-Ons and very slowly disabled the add-ons one by one until I found out the problem was Norton Intrusion Prevention.

 

Turning that off would make Internet Explorer work just fine.  But that didn't fix the problem as I would get viruses more easily.  The whole thing was starting to annoy me so I went off the computer for a few hours.  Next time I got on the problem was fixed.

 

But now whenever I try to open Norton Internet Security it won't open.  When I click on the file nothing happens at all.

 

I did a scan in safe mode and 700,000 items later it detected nothing.

 

System Restore won't work due to virus protection which I can't disable because I can't open Norton...

 

Do I have a virus? 

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I bought Norton via the internet.  I want to try to reinstall it and I have the install key.  But how do I do that? Any links?