Windows 10: Windows 11 doesn’t let me prevent a device from waking up my PC

Hi!I’ve been struggling with my computer not sleeping on it’s own for a while now and thought it would resolve if I built an entirely new PC. No luck. Turns out, a PCI device is waking my pc PCI Root Express Port, as I followed this thread going through the steps of finding the thing that keeps waking up the computer. What you do is open command prompt in administrative mode, type powercfg/lastwake after waiting the time you have set your pc to sleep at, then see what device is bugging you. In the aforementioned thread it tells you to go into device manager, find the device, double click it,

:)

 

Windows doesn`t start. Authomatic repair doesn`t work.

Thanks again!!

I`m sorry I had not noticed that the text on the picture was in spanish. It says that windows has replaced some damaged clusters in "name" file and "directory". Then, at the end "an unspecified error occurred (75736e6a726e6c2e 4f6)".

I`ll do it and I`ll be updating this thread when I have the report.

- - - Updated - - -

I ran SeaTools. These are the results:




Does it mean my HDD is useless?

 

Troubleshooting PCs spontaneously waking from sleep

I've also battled with sleep/wake issues over the years, and from experience have learned that trying to find, or rationalise, the root cause is a waste of time. All you need is `powercfg`.

`powercfg -devicequery wake_armed` from an Administrator PowerShell window/Command Prompt will give you a list of all devices that can possibly wake the PC. This command is interesting because very often, it will show devices that you'd never expect being able to wake your computer. I think in one instance I had the chipset device listed!

`powercfg -devicedisablewake "device_name_from_device_query"`will prevent said device from ever waking the computer. This command is 100% the only thing I have found that will resolve sleep/wake problems. Updating drivers, unplugging peripherals, switching to a cleaner power supply (UPS), changing ethernet cables... none of those have helped, yet`powercfg -devicedisablewake` has done the trick.

Note that occasionally, devices you have disabled wake for may start waking up the PC again - this happens if you plug a USB device into a different port, or occasionally when drivers are updated, because Windows sees it as a new device. In that case rerun `powercfg` to find and disable that device again.

If this does not resolve your wake issues, I would start looking at power fluctuations.

 

PC wakes wakes up from Hibernate

Hello zolotoy,

Check using Option Two in the tutorial below to see if there may be an event log that may help ID what woke your PC.

*Arrow See Wake Source in Windows 10 Windows 10 Tutorials

If a device is identified, then you could prevent it from being able to wake the PC.

• See Devices able to Wake Computer in Windows 10 Windows 10 Tutorials
• Allow or Prevent Devices to Wake Computer in Windows 10 Windows 10 Tutorials