This behavior occurs because the settings that appear on the System Settings page are derived from the registry settings for the preferred power plan.Ĭhanges that you make to the active power plan do not affect the global settings on the System Settings page, unless you are currently using the preferred power plan. The preferred power plan is specified in the registry. This behavior does not occur if you are currently using the default, or 'preferred,' power plan.

Note You can access the System Settings page by clicking any of the following links in the left pane of the Power Options page: When you configure power options for the active (current) power plan in Windows Vista or in Windows 7, the changes are not reflected on the System Settings page in the Power Options item in Control Panel. Windows Vista Ultimate Windows Vista Enterprise Windows Vista Business Windows Vista Home Premium Windows Vista Home Basic Windows Vista Starter Windows Vista Ultimate 64-bit Edition Windows Vista Enterprise 64-bit Edition Windows Vista Business 64-bit Edition Windows Vista Home Premium 64-bit Edition Windows 7 Enterprise Windows 7 Home Basic Windows 7 Home Premium Windows 7 Professional Windows 7 Starter Windows 7 Ultimate Windows 8 Enterprise Windows 8 Pro Windows 8 Windows 8.1 Windows 8.1 Enterprise Windows 8.1 Pro More.

How to delete a power plan