To adjust power and sleep settings in Windows 11, select Start > Settings > System > Power & battery > Screen, sleep, & hibernate timeouts.
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Turn my screen off after: Select how long you want your device to wait before turning the screen off when you're not using your device, both when it's plugged in and when it's on battery power.
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Make my device sleep after: Select how long you want your device to wait before going to sleep when you're not using it, both when it's plugged in and when it's on battery power.
See more about how to shut down, sleep, or hibernate your PC Open Power & sleep settings
To adjust power and sleep settings in Windows 10, go to Start , and select Settings > System > Power & sleep.
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Under Screen, select how long you want your device to wait before turning the screen off when you're not using your device.
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Under Sleep, select how long you want your device to wait before going to sleep when you’re not using it.
For more power saving options, select Additional power settings to change how your device uses power.
See more about how to shut down, sleep, or hibernate your PC Open Power & sleep settings