Error 3048,3

This error message just flashed on my computer.  Heaven knows what is wrong.  When I followed the directions, they were too complicated for me to use.  I have no aspirations to being a computer tech.   i guess Symanatec is just too big a mouthful and I should now take it off and get a free anti-virus.  When they don't work, we can just get another free one.  Symanted expects us to be techs and of course most of us are not.