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Solution to Inspiron fan continues to run in Sleep Mode
I've got a brand new Inspiron 16 Pro running Windows 11 Pro and have a #meToo moment about the fan continuing to run in sleep mode.
These seems to be a perennial problem. Search the community fora for "sleep fan" and you'll find hundreds of similar complaints spanning many different Dell models over many years.
If I Hibernate my laptop, the fan stops as it should, so it's not a motherboard fault.
I've spent several hours browsing this forum and the net generally and this is what worked for me.
The issue is that Microsoft have moved to a "Modern Standby" (S0 Low Power Idle) which still allows some software programs to run even in Sleep mode.
The question is: how to turn that off and move to Standby S3 instead?
This webpage gives the best explanation I found but below are my own experiences and idiosyncrasies:
https://appuals.com/disable-modern-standby-windows/
When I run the "powercfg /a" command described in that link, I got the exact output as shown, saying that Standby (S3) is disabled.
I booted to my Bios and found in the Power section an option to Disable S3, however that was set to OFF. I.e. S3 was NOT disabled (S3 is enabled) which seemed a bit confusing given the powercfg output.
I added the PlatformAoAcOverride = 0 Registry value as described and that didn't solve the problem UNTIL I remembered to reboot the laptop.
Now sleep mode does what is says on the tin and rapidly sleeps the laptop with the fan OFF.
Unlike the Modern Standby however, I now have to press the power button to turn the laptop back on, whereas previously just pressing a key would wake the laptop up, but this is exactly what I want.
I hope this post helps you.
In true "1 step forward, 2 steps back" fashion, during this process I discovered 2 other problems I now have to try to fix (any help welcome!):
1) "Hibernate" is not showing as an option in the Power menu
2) The bios screen blanks the screen (turns the whole display off) for a second, every 3 seconds or so, which is VERY annoying!
alan cai
8 Posts
0
October 4th, 2022 06:00
In my case, it seems like the problem is caused by the Windows defender. Basically, it try to scan your computer during sleep. Because it's the intense task, fan is running. I disabled this in the task scheduler. I designate a specific time for this regular scanning (for example, Saturday afternoon at 2 PM). This solves the problem.
DELL-Nat M
Community Manager
Community Manager
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2.2K Posts
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November 1st, 2022 09:00
You may also use the "Get Help Now" option at the bottom right to chat with a Dell technician right away.
(edited)
AdrianG001
4 Operator
4 Operator
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4K Posts
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November 20th, 2021 02:00
To prevent this from happening follow the below steps:
1.Click Start button, click Control Panel, click System and Security, and then click Power Options.
2.On the Select a power plan page, click Change plan settings for the plan that you want to change.
3.On the Change settings for the plan page, click Change advanced power settings.
4.On the Advance settings tab, expand Sleep, expand Allow Hybrid Sleep, and choose OFF.
5.On the Advanced settings tab, expand Sleep, expand Allow wake timers, choose Disable for both when your computer is running on battery and when it's plugged in, and then click OK.
6.On the Advanced settings tab, expand USB settings, under USB settings expand USB selective suspend settings, choose Disable.
7.Select Apply and then OK to save the changes.
Check if the above steps work and reply.
60RoverS2
2 Posts
0
January 31st, 2022 05:00
Tried your solution in Power Options. However, under the Sleep option in Advanced Settings doesn't display a hybrid choice. I only see "Sleep after" and "Allow wake timers." Will have to research this a bit more...
BodRy
1 Message
0
April 17th, 2022 00:00
Thanks a lot for this post. I have suffered from my DELL not going to sleep since I bought it. Frankly, I almost didn't use the computer because of that (One year already), though the system is powerful enough.