Problem after installing new hard drive

I installed a larger hard drive in my laptop replacing one that worked fine. Since then, my Internet Security 2009 is running between 50 and 100% almost all of the time.

 

Is this a known thing? Should I reinstall?

 

Even after diabling smart firewall and antivirus, it runs at 30-50%.  I have no idea what it's doing, nothing else is running. 

Message Edited by dsteak on 07-06-2009 12:58 PM