We have an HP with XP and the "force feed" Norton has expired. My boyfriend hired someone to fix it. She installed McAffee. I tried to explain to them that the best way to fix it would be to install the full version of Norton. I don't like Norton or McAffee but I have seen similar problems before with the HP/Norton witches brew of code. They are dependent on each other to be functional. When the Norton expired it caused all kinds of problems with the OS. Installing the McAffee seemed to just complicate the problem. Is there an easy fix for this?