How to check your computer’s supported power features on Windows 11
Windows 11 can handle many power states, as described in the UEFI Forum’s Advanced Configuration and Power Interface (ACPI) specifications (opens in new tab).
You don’t usually think about these power states as long as you can turn your computer on or off. However, it is important to understand them as they describe how the system handles electricity. Also, depending on the hardware configuration, some power features may not be available on Windows 11, such as: B. “Hibernate”, “Quick Start” or “Modern Standby”.
This guide will walk you through the steps to find out the power states supported on your computer based on the hardware configuration.
How to determine the power status of your device in Windows 11
To find out the power states supported by your computer, follow these steps:
- Open beginning.
- Search for command promptright click on the top result and select the Execute as administrator Possibility.
- To determine your computer’s supported sleep states, type the following command and press Enter: powercfg /availablesleepstates
- Confirm the supported power states on the computer:
- Standby (S3).
- Standby (S2).
- Standby (S1).
- Standby (S0 Low Power Idle).
- hibernate.
- hybrid sleep.
- Fast start.
Once you complete the steps, the system will display the sleep states available on the device. You can also determine the unsupported power states.
Windows 11 power states: everything you need to know
On Windows 11, a device can support up to seven power states, depending on the hardware configuration.
Operating status (S0)
The Working power state has an ACPI (Advanced Configuration and Power Interface) state. “S0.” The state indicates that the device is usable and supported hardware that is not in use can go to a lower power state to conserve power.
Hibernation (modern standby) (S0 idle with lower performance)
This power state, Sleep (Modern Standby), has an ACPI designation of “SO idle with less power.” It is available for some System-on-a-Chip (SoC) devices that have a low-power idle state. Devices with this power state can transition from a low to a high power state to respond quickly to specific events.
If the device supports Modern Standby, S1, S2, and S3 sleep states are not supported.
Hibernation (S1, S2, S3)
The power state “Hibernate” can also have the ACPI state of S1, S2or S3. In this state, computers appear offline, but the system memory keeps working to allow the device to resume quickly. In addition, some components remain active, including network adapters, keyboard, mouse, and USB devices.
Also available in this category is the Hybrid Sleep mode, which allows the system to create a hibernation file to keep the current session alive if the device loses power during hibernation.
Hibernation (S4)
The “Sleep” power state is referred to as “S4” and defines when the system appears powered off. When the device goes into sleep mode, the system saves the content loaded into RAM on the hard disk to save as much power as possible. However, some components such as the keyboard, network adapters, and USB devices remain powered on, allowing these devices to be used to wake up the computer.
At this power state level you will also find the “Quick start” state. The fast boot state works similarly to hibernation, but in this power state, any logged-in user is logged off, and then the system creates the hibernation file, saves the contents in memory to the hard drive, and then the computer shuts down. This approach makes it possible to speed up the boot process.
Soft-Off Power State (S5)
The “Soft Off” power state has an ACPI designation of “S5” and describes the state between completely switched off and boot cycle.
Mechanical Off Power State (G3)
The Mechanical Off power state has an ACPI designation of “G3” and defines when the device will shut down.
This guide describes all possible energy states, but some of them (S0 and G3) are not listed in the command output, even if they are supported by your computer’s hardware.
More resources
For more helpful articles, coverage, and answers to frequently asked questions about Windows 10 and Windows 11, see the following resources: