Is your PC waking up automatically when in Sleep mode, and wondering which device is waking the system up? Here is a command which gets the list of devices that are configured to wake the computer up.

Open a Command Prompt window (cmd.exe) and type:

powercfg –devicequery wake_armed

Press {ENTER}

If you find a device in the list that may be causing the problem, open Device Manager and disable the wake up option for the device. This can be done by double-clicking the corresponding device in Device Manager, clicking Properties and clicking on the Power Management tab.

Note: You can open Device Manager via Control Panel, or by running the command devmgmt.msc.

SEE ALSO

Powercfg Command-Line Options

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