Windows 10: Fan runs full speed on waking from sleep or during sleep

New Asus Zen AIO ZN242GD only in service since early January 2020. Since the January 28, 2020 KB4532695 cumulative update, when the PC goes to sleep for an extended period of time a few hours to overnight the cooling fan will either start running full speed while it is still asleep or immediately on waking up. It will then continue to run loudly uninterrupted for hours until the PC is completely shut down and rebooted a "restart" doesn't work for this- fan still keeps running.


I have checked Task Manager and can't identify any high-use culprits for CPU, memory, or disk access. In fact, even while the fan is running full speed the CPU usage usually reads 0-2% and no disk access is registering; RAM usually at its normal level of about 20%.


I have done regular and elevated scans with Norton looking for any malware; nothing found. I have had no actual alerts from Norton.


The only thing I can possibly correlate to this behavior is found in the Norton 360 history log not an alert, where I generally find that at approximately the point where the fan started running on high Norton blocked access to an app and generated the "Unauthorized Access Blocked Access Process Data medium severity event shortly before the fan started running high. This was happening with Asus Live Update, which I disabled to no effect; the last two times it happened it was with MS Office Click To Run; before that it was with Windows Defender MSMPENG.exe. I have disabled all Startup Apps and non-windows services, which hasn't helped.


I did just find a non-critical BIOS update to 307 from 305 on the Asus website, which I applied. Haven't had time to test yet since this only happens after the PC is asleep for quite a while.


Any help would be greatly appreciated before I start down the road of looking into hardware issues. Thanks very much for reading.

:)

 

Fan runs in sleep

Need some help troubleshooting a problem that stated since I upgraded from Win7 Pro x64 to Win10. Basically, my PC fans run at what seems like full speed constantly, even in sleep. Occasionally, they'll stop for a short time, say 30 minutes, but then just
start up again. CPU is at 0-3%, memory is 15% and disk is 0-1% but still the fans are running at almost full speed.

 

Fans Run after sleep mode

Hi, is it normal in Windows 10 for a laptop fan to still run after putting the device to sleep?

This is using the power button or sleep button from the start menu.

This is on a Dell 5520 and an XPS 7390, does anyone happen to know?

Also is it possible to see what could possibly be waking a laptop up from sleep?

Thanks

 

Sleep / Wake Function, malfunctions after waking

Hi,

Issues that arise after waking up the PC from sleep mode might have been caused by a software conflict or system file corruption. For us to clarify the issue, we would like to ask these questions:

• What is the exact issue that you are experiencing?
• Did you notice any recent system changes prior to this issue?
• Have you encountered any error message?
• What troubleshooting steps have you done so far?

If you are having issues waking your PC from sleep, we suggest running the
Power troubleshooter as an initial troubleshooting. Kindly follow these steps:

• Click on Start.
• Type Troubleshoot, and then press Enter.
• Under Find and fix other problems, click on Power.
• Click on Run the troubleshooter button.
• Follow the onscreen guide.

We will wait for your response.