It could be the registry that refers to these files.

Go to Run and type Regedit.

Double click your way through to the following keys:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices

In the right pane of each of these keys you will see the programs that load at startup.

If you recognize the above files or see anything regarding Norton System Works, delete it.

It might be a good idea to back up your Registry first. When you have Regedit open, choose Registry>Export Registry and save it as "backup" to your desktop. This way if anything gets "messed up" you can just double click on this file to restore your previous registry.

Let's get these messages out of the way and then we can work on the stubborn icon.