How to change to s1 sleep mode in bios

Written by larry simmons
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How to change to s1 sleep mode in bios
Setting the sleep mode of your computer saves energy when you're away. (tired of studing image by Andrey Kiselev from

Placing your computer in sleep mode is a way to save energy by reducing consumption from a fully activated system. In addition, sleep mode allows you to cut down on the time required to reboot your system after you shut it down completely during periods when you system is not in use. Setting your computer for sleep mode requires you to change a few settings in your system set-up BIOS, which can be accessed during system bootup. It doesn't take long, and the new sleep mode is immediately available after you make the change, reducing the energy requirements for your system the next time you have a need to step away for an extended period.

Skill level:


  1. 1

    Turn on your computer and enter into the system BIOS by pressing the indicated key during the computer's boot sequence. In most BIOS programs, the button is "F2" or "Del."

  2. 2

    Use the arrow keys on your keyboard to highlight the Power Management Setup option at the top of the BIOS main menu screen. Press "Enter" to open the power management set-up screen.

  3. 3

    Set the system for use of the S1 Sleep mode. Move the arrows to select the management option and then use the "+" and "-" keys to make your selection.

  4. 4

    Select the "Enabled" option for ACPI function, and then choose "S1" for ACPI Standby State. Select "Disabled" for both the "Wake on Ring" and "Wake on LAN" options to prevent the sleep mode being deactivated by the system because of network activity.

  5. 5

    Press "F12" to save and exit the BIOS set-up utility. Upon exit, the system will reboot with the new settings in place.

  6. 6

    Reboot Windows and press the "Start" button. Select "Control Panel" and then select "Power Options." Click "Change Plan Settings." Select the time you wish the computer to wait after the last input before entering sleep mode from the pull-down menu next to "Put the computer to sleep." Press the "Save Changes" button to save the time chosen. Windows will use the sleep mode selected in the BIOS after the allotted time passes with no input on your part.

Tips and warnings

  • S1 sleep mode is the first level of sleep process. While not as energy efficient as other sleep modes, it leaves your computer quickly available for use by maintaining CPU and RAM operations but shutting down the hard drive and monitor.

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