Windows 10: Desktop does not sleep after 15 minutes

Under “Power and sleep,” my desktop is set to go to sleep after 15 minutes. Under “additional power settings” it is set for “high performance.” However, the desktop does not go to sleep after 15 minutes. Sometimes it doesn't go to sleep for hours. I ran the power troubleshooter but it did not detect a problem.Why can't this simple setting work?

:)

 

Windows 10 (sometimes) goes to sleep after only 2 minutes of inactivity

Hello Michelle,

Unfortunately, steps you suggested did not fix the issue. I do not use a screen saver, so setting the option you mentioned is not available to me. Also, I doubt messing with the registry should be necessary. The current (default) Windows power plan that
I'm using has screen timeout set to 5 minutes when on battery, and 15 minutes when plugged in. Sleep timeout is set to 15, and 30 minutes, respectively. Therefore, the computer should not go to sleep before 15 or 30 minutes have elapsed.

 

TV Monitors not sleeping after 15 Minutes

I use two 32" TVs as monitors for my Windows 11 Desktop Computer.

Vizio TV is the primary display and uses a VGA to HDMI cable connection.

Samsung TV is the secondary display and uses a HDMI to HDMI cable connection.

Under the Power Setting, I specify "Turn off my Screen after 15 Minutes".

Neither Monitor goes to sleep after 15 minutes of inactivity.

Because these are not true computer monitors, is that why they will not turn of after 15 minutes?

Is there some other Windows setting that I need to set?

Is there a TV setting that needs to be set for the computer to turn off these monitors after 15 minutes?

 

Windows 10 - Sleep Works But Only if 5 Minutes or Less

What about the Troubleshooting tutorial steps here:

https://www.makeuseof.com/tag/fix-windows-10-sl...

I've never seen at least one them not be successful.

I had suggested first to set Display at 0, Sleep at 1 minute and Hibernate at 2 minutes and then after each step sit back to observe. I have rarely had to work all the way through the list.

Absolute thoroughness is required when troubleshooting Sleep, skipping nothing and asking back if you need any help to complete a step. We often find out later that the fix was the skipped step, so please do not skip any. If you need help performing any step
I will help.