Windows 11 Screensaver / Display Sleep functions not working

Hi MattS_871,

Thanks for reaching out here at Microsoft Community.

It sounds like your Windows 11 Screensaver / Display Sleep functions not working. The following steps could be applied to troubleshoot:

1. Confirm the power option has been set to allow the computer to sleep.

2. Hold down Windows + R to launch RUN > Type: regedit and hit Enter > locate to HKEY_CURRENT_USER\Control Panel\desktop\ScreenSaveActive, and create this string if there is no ScreenSaveActive. > Right click on it, and edit the key valule to 1.
3. Hold down Windows+X to run Windows PowerShell (Administrator), and execute the following commands respectively in sequence:

sfc /SCANNOW

Dism /Online /Cleanup-Image /ScanHealth

Dism /Online /Cleanup-Image /CheckHealth

DISM /Online /Cleanup-image /RestoreHealth

Allow the process to finish and see if it solves any issues. Restart the device afterward.

(Ａpply this method several times to see the effect.)　

4. If the problem is still there, you could consider to perform an in-place update on your system to upgrade/repair the system (this is a non-destructive repair of the system, which is different from reinstalling the system. Normally, installed applications remain the same and update the system to the latest version.)
5. Click hereto download the installation media.

2. After the creation tool is created, go to Settings > Windows Update, and select Check for updates. (it is recommended to back up important data to avoid data loss)

Note:

• Your system disk may require 15-20G of free space (similar to upgrading to Windows 10)
• If the system is installed in an unsupported directory or under other abnormal conditions, it may not be able to be repaired without damage.

 Let us know if you need any further assistance, we will be glad to assist you. Wishing you a happy new year!

Best Regards,

Lynn Sun | Microsoft Community Support Specialist

* Beware of scammers posting fake support numbers here.

* Kindly Mark and Vote this reply if it helps, as it will be beneficial to more community members reading here.

I followed the in-place update process. Just like with the DISM commands it worked initially upon the first boot, and now it's no longer working again.

I had the same issue and solved it, wanted to share with this thread.

I turned off the Nvidia Graphic Overlay in Geforce Experience. this seems to have solved it - now monitor sleep and screen saver is working.

I had the same problem (screen saver, display off and even sleep not engaging automatically), but every solution posted here (or on any other website for that matter) didn't work for me. I unplugged everything from my computer, I changed every power setting, I ran sfc and dism, but nothing helped.

What solved this issue for me is to install all optional driver updates through windows update. There were some HID drivers and something else, but after the updates screen saver and display sleep work as intended.

So I ran all of the steps you recommended.

The DISM commands once again fixed the issue, and it was working immediately after reboot. Then I rebooted again and it still worked immediately after the reboot. Then after I moved the mouse a few minutes later to discard the screensaver it never came back on again...??? I checked to make sure it was still enabled and it was but no screensaver returned. Very strange, why would it work one minute and not the next? Could a problem be loading that is interfering with it?

Then I ran the final steps you mentioned for installation media and updated windows. I never ran the installation tool though, was I supposed to run that off a USB and use the repair feature?