Comodo takes over my computer

If I leave my computer for more than about 10 minutes, “something” takes over my hard drive.

The CPU usage goes very high. If I move the mouse hoping that I can get back to the work I was doing, the “something” won’t let go for another 5 minutes. It then goes quiet allowing me to do my normal work.

I think this “something” is Comodo doing some sort of check of my hard drive. Could I be correct and if so how do I control it?