Help with this!

For the past few months, something has been happening with my Norton.
First, it just removed itself from my computer, so I had to use the removal tool/re-installing it from the Norton Website. I figured it was a side of affect when my nephew was playing around with it, but it's happened a total of 2 times lately.

Is there a way for me to fix this?I haven't downloaded anything bad or programs that could even infect my computer. I need help with this please!