Specify the 'Turn Off the Display (Plugged In)' in seconds (max: 4294967295) Specifies the period of inactivity before Windows turns off the display. If you enable this policy, you must provide a value, in seconds, indicating how much idle time should elapse before Windows turns off the display. If you disable this policy or do not configure it, users can see and change this setting. Counter Measure: Enable this policy setting. Potential Impact: If you enable this policy, you must provide a value, in seconds, indicating how much idle time should elapse before Windows turns off the display. If you disable this policy or do not configure it, users can see and change this setting."

[max value in seconds]

(1) GPO: Computer ConfigurationAdministrative TemplatesSystemPower ManagementVideo and Display SettingsTurn Off the Display (Plugged In) (2) REG: HKEY_LOCAL_MACHINESoftwarePoliciesMicrosoftPowerPowerSettings3C0BC021-C8A8-4E07-A973-6B14CBCB2B7EACSettingIndex