Yes, that is what I am saying. This is one reason for all of your infections. If you have not paid for Norton and Comodo they will not work and they must be uninstalled. 100% Uninstalled. You cannot have more than one anti virus and one firewall installed on a computer. If you do then NONE of them will work correctly.
Keep the Microsoft Essentials and UNINSTALL, notice I say UNINSTALL, the other two. Don't just delete them that doesn't remove them it only deletes the icons for the programs it does not remove the programs.