For a long time Windows has had power saving functionality of various types. In Windows XP and Windows Vista we had a standby mode which used minimal power and a hibernation mode which would use no power. In Windows 7 and Windows 8 the hibernation and standby modes become one single mode called Sleep mode. You can configure how long the computer will be idle before it goes to “sleep”.
- Right-click anywhere on the Windows desktop. When the context menu appears, click on Personalize.
- In the bottom-right of the personalization window, click on the Screen Saver link.
- In Screen Saver Settings window, click on the Change Power Settings link.
- In the left column of the Power Options window, click on the link labeled Change when the computer sleeps.
- You can now configure when the computer goes to sleep (AKA hibernation) and when it turns the monitor off to save power.
- When done, click on the Save Changes or OK button.