The Specify the System Sleep Timeout (Plugged In) machine setting should be configured correctly. Specifies the period of inactivity before Windows transitions the system to sleep. If you enable this policy setting, you must provide a value, in seconds, indicating how much idle time should elapse before Windows transitions to sleep. If you disable this policy setting or do not configure it, users can see and change this setting. Fix: (1) GPO: Computer Configuration\Administrative Templates\System\Power Management\Sleep Settings\Specify the System Sleep Timeout (Plugged In) (2) KEY: HKLM\Software\Policies\Microsoft\Power\PowerSettings\29F6C1DB-86DA-48C5-9FDB-F2B67B1F44DA\ACSettingIndex