Windows 10: What's preventing Windows 10 going into sleep after idling certain time?

Windows 10 Pro, 2004 build 19041.450


In version 1909, it could go into sleep after idling. Once upgraded, it could not. I suspected it was antivirus, removed it and it was able to go into sleep after idling again.


Now it stopped working again. I can manually put it to sleep Start -> Power -> Sleep. However, after idling for certain time, it can only turn off monitor and hard drive but CPU remains on.


I can't recall much of changes in between. I did install a USB dongle for a gaming controller but it's unplugged when I don't play game. USB Bluetooth is also turned off.


I've already removed most of USB devices such as storage. But the problem remains.


How can I troubleshoot?


Thanks

:)

 

Bluetooth still on while idle

Thanks for following the steps. Now, the settings won't take effect if you are only using normal PC idle mode. Normal functionality of Bluetooth and Wi-Fi settings are to stay connected even if PC is idle. With the settings that you have created, we would
suggest that you set your PC to automatically go to Sleep or
Hibernate once idle. In this way, the settings "Allow the computer to turn off this device to save power" should take effect.

To set your PC to automatically go to Sleep or Hibernate when idle, please follow these steps:

• Open Control Panel, set view by: Small
  icons.
• Look for Power Options.
• Click on Change when the computer sleeps on the left pane.
• Set a timer.

Please try it out. Hope it helps. If you have any other concerns, don't hesitate to come back to us.

 

Preventing sleep on laptop/monitor

Hi Tricia,

In order to help you with your concern about preventing your Windows 10 not to go to sleep mode, may we request you to answer the following questions first:

• Have you made any recent changes to your computer system prior to getting this issue?
  
• What is the current Build and Version of your Windows 10 PC? To know these information follow these steps:
  

• Press the Windows key + R.
• Type Winver.
• Press Enter.
• A small box will appear showing the current Build and
  Version of your PC.

(Should you need to update your PC, you may click on this
link. This will also show you the update history for Windows 10.)

• Are you getting any error messages? If yes, kindly post it here.
• What troubleshooting steps have you taken so far?

You may utilize the troubleshooting suggestions from the post of
Aleksandr 10 in this thread, to remedy the
automatic sleep that your device is displaying. This link has been helpful to a lot of Community members who had the same concern and may also be helpful in the issue at hand.

We look forward to your response.

Regards.

 

What is up with the sleep function in Windows 10?

Hi Bruce,

Thank you for contacting Microsoft Community.
I will surely help you to fix the issue with sleep mode.

This issue could have occurred due to incorrect power settings.

I suggest you to try the following steps to increase the time limit for computer to go into sleep mode once left it idle:

• 
  Click on Start and click on
  Settings.
  
• 
  Double-click System.
  
• 
  In the left pane click on
  Power & Sleep.
  
• 
  Under the section
  sleep, change the time limit for computer to go to sleep.
  
• 
  Restart the computer and check if it helps.
  

Hope this information helps. Reply to the post with updated status of the issue so that we can assist you further.