For Seniors: Change When a Laptop Goes to Sleep
Changing how much time lapses before your laptop automatically goes to sleep can save precious battery power. Sleep is a state that uses minimal power but keeps the currently open documents and programs active (and quickly available to you). Managing battery is important because without battery power, your laptop must be plugged in in order to use it.
If you want to adjust several power settings at the same time in order to save the most power while you work, you might try using a Windows power mode. A power mode is a collection of settings that control when your monitor dims or sleeps, and when the computer goes to sleep.
Depending on how you work, a power mode might suit your needs, or you might prefer setting only the laptop sleep setting.
Start→Control Panel→Hardware and Sound.
The Hardware and Sound window appears.
Click the Change When the Computer Sleeps link.
The Edit Plan Settings window appears.
In the Put the Computer to Sleep field, click the arrow in the On Battery column, and select the Sleep setting you want.
A smaller interval saves battery power, but it might disrupt your work. So choose a setting according to your preferences.
Click the Save Changes button.
The new setting is saved.