Norton Internet Security causing computer to reboot without warning?

I have a subscription to Norton Internet Security.  My installation of Norton Internet Security 2012 started reporting problems a week ago or so.  It said I should uninstall the product and reinstall.  Knowing what a PITA that was going to be I kept putting it off.  Last night my laptop started rebooting itself.  I couldn't even get into Safe Mode.

 

Today at work, where I don't have an internet connection I can use, it boots fine.


Norton was still complaining so I've gone ahead and uninstalled the product (though whether it completely uninstalled is always questionable).


Rather than use my years-old CD I thought I should download the most recent copy from the Norton website and do a clean re-install.

 

 

Does my subscription cover Norton 2013?  As long as I'm at it I might as well get the most current version if it's covered under the subscription.

 

Has anyone else had this problem?