Prevents the Screen Saver dialog from opening in the Personalization or Display Control Panel. This setting prevents users from using Control Panel to add, configure, or change the screen saver on the computer. It does not prevent a screen saver from running. Counter Measure: Enable this policy setting if you want to force users to use a specific screen saver. Potential Impact: Enabling this setting will prevent users from using Control Panel to add, configure, or change the screen saver on the computer. Fix: (1) GPO: User Configuration\Administrative Templates\Control Panel\Personalization\Prevent changing screen saver (2) REG: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System!NoDispScrSavPage (3) WMI: ###