Windows 10: Windows no longer goes to deep sleep - turns monitors off, but fans still running

This is a mini desktop PC with Windows 11. Previously the PC has gone to sleep fine turning fans off, but I had an issue with it turning on again randomly.I did some troubleshooting, and the result is that it now does not even go to sleep properly anymore.When I click Power -> Sleep, the monitors turns off, but the fans keeps going. I have not changed anything in BIOS.I unplugged all USB-devices.powercfg -restoredefaultschemes -> Did not help.powercfg -requests --> Only shows none.How can I find the reason the computer won't turn completely off?

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Monitor turns off when computer goes to sleep


Hi everyone,

This is a really small problem but I just want to get down to the cause of it. I am running windows 10 with dual monitors and every time the computer goes to sleep one of the monitors turns off and requires me to push the power button on the monitor to turn it back on. Both monitors are LG LED 23EN43 but it only happens on one of them. Any ideas why this might be happening and how to stop it?

 

Monitor goes to sleep randomly with windows 10 upgrade

Hi Jaro,

Since you've tried the troubleshooting above, let's proceed to the next troubleshooting steps to further identify the issue. Kindly follow these steps:

• Perform a
  clean boot.
• Use the
  System File Checker tool to repair missing or corrupted system files.
• Always make sure that you have the
  updated version of your operation system.

Let us know the result.

 

Windows from HDMI monitor move to DP monitor when monitors go to sleep.

Hi Bobbeloos,



Welcome to post in Microsoft Community.

I'm Mosken, I do apologize for the inconvenience that you're experiencing right now, let me help you figure it out.



According to your description, I knew that you have two external monitors of similar model connected via HDMI and DP, but when the system goes to sleep, the DP-connected monitor goes straight to black, but the HDMI-connected monitor shows "no signal" and then goes black, and when you go to sleep from sleep, the DP-connected monitor goes straight to black All windows in HDMI monitor moved to DP monitor when computer was woken up and the resolution was not normal. If my understanding is wrong, please correct me in the reply.



Based on the available information, the speculation is that when the system goes to sleep, your HDMI connected monitor will be directly disconnected, it is recommended that you turn off "Allow the computer to turn off this device to save power" by follow steps. "Win" + "X" > "Device Manager" > "Display Adapter", double click "Display Adapter" to expand the entry, you will see a list of your monitor device names, then select your external monitor device names(try both), right click > " Properties" > "Power Management" tab, then uncheck "Allow the computer to turn off this device to save power", then press Enter to confirm.



The above steps are provided based on the information I have learned so far, I wish that will be helpful to you. If your problem still cannot be solved by these steps, you could tell me the specific situation in the next reply. I will continue to assist you in solving the problem.



Best Regards,

Mosken- MSFT | Microsoft Community Support Specialist