1. Uninstall ADA via Control Panel->Uninstall Programs.
2. Delete the <Install Drive>:\CA folder
3. Delete the hidden folder C:\Program Files\Zero G Registry\.
4. Check for anything on the C:\ drive like C:\CA or C:\Mysql and delete the directories.
5. Open 'regedit' and check for and delete any NetQos, ADA, SuperAgent, or Mysql keys under:
6. Reboot the server then attempt the installation again as a local administrator on the server.