Several tips registry was supervised this only for Windows XP. Before edit the registry, good for you to backup before

1. Click the Start Button > Run
2. Type regedit and press Enter
3. In Registry Editor, choose File menu > export
4. After export registry file, save them.

Warn! Editing your registry editor could crash your Systems Operation, so always backup your original Registry.

HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Policies
On subkey Policies, make new key  Edit > New > Key and rename to System.
Then on subkey System, make new DWORD Value and rename to NoDispCPL.
Double click NoDispCPL and insert 1 on Value Data.