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More than a year ago I needed to prevent Windows 10 from going to sleep while charging. To accomplish this, since setting the Power Plan to "never" was not enough, I followed some online guide that suggested to modify something in the Registry Editor.

Now I don't need this feature anymore (and of course again, changing the Power Plan is not enough), but I don't even remember what I changed at that time, so at the moment my PC never goes to sleep even if I would like to. I looked for the same guide but I couldn't find it. I specify that while not charging, the PC goes to sleep without problems.

Any suggestions?

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  • You need to tell us what registry change you made. Standard Windows Power settings allow a machine to sleep or not sleep (as you choose) without any issue. Be sure you update BIOS and Power Drivers for your machine.
    – John
    May 27, 2021 at 22:12
  • @John if I remembered that, maybe I wouldn't have asked this question :-) Is there a way to check the most recently changed registry parameters?
    – wetrust
    May 28, 2021 at 17:33
  • You have to look back and see what you changed in the registry (we do not know). I never had to use registry changes to make the computer sleep properly.
    – John
    May 28, 2021 at 17:42
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    I spent some time thinking about this. You may be best to back up your stuff, reinstall Windows and then use Windows tools (not the registry) to manage power. I do and power management works fine.
    – John
    May 28, 2021 at 19:11
  • @john thanks for the suggestion, although It would be too burdensome for me at the moment to reinstall windows
    – wetrust
    May 29, 2021 at 20:03

2 Answers 2

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Let me clarify.

The explanation is Modern Standby which was introduced in Windows 10 for many new laptops. Modern Standby (S0 Low Power Idle), if available, consumes more power and enables faster startup than the traditional S3 Standby, which you're probably missing. Your laptop is probably in Modern Standby which is not the traditional Sleep (S3).

According to Modern Standby you can disable Modern Standby (S0 Low Power Idle) and thereby re-enable S3 by running the following command in an elevated command prompt

reg add HKLM\System\CurrentControlSet\Control\Power /v PlatformAoAcOverride /t REG_DWORD /d 0​

However, first you should run the following command in an elevated command prompt

powercfg /a

That will tell you if S0 Low Power Idle or S3 is available on your system. If S0 Low Power Idle is available, you can try to disable it. Remember to restart your laptop after adding the registry entry.

Finally, I should mention that the Windows 11 update of week 38, 2022, seems to have improved S0 Low Power Idle significantly, thereby making my laptop sleep the way I would expect it to do.

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  • Welcome to SuperUser! Instead of posting a new answer, please edit your existing one to incorporate the additional information from this one. Sep 29, 2022 at 19:46
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    Then its time to delete one account !!!! Sep 29, 2022 at 20:29
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Try advanced power settings:

enter image description here

There are some settings that are not visible directly in control panel: enter image description here

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  • Unluckily, I already managed to get here, I also restored plan defaults, but this was useless.
    – wetrust
    May 28, 2021 at 17:32

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