Windows 8 and 8.1 Forums


Something keeps waking up my PC and I cant figure out what

  1. #1

    Something keeps waking up my PC and I cant figure out what


    I have tried all the basic troubleshooting and I just cannot figure this out.

    I have checked the Windows system logs. The power trouble shooter says Wake Source "Unknown"

    I have turned off the "Allow this computer to wake up for updates" settings.

    I have run the command line stuff to find out what has woken up the PC and what is allowed to wake it up:

    powercfg –lastwake

    powercfg -devicequery wake_armed

    The first says unknown, the second says nothing can wake it up.

    I have turned off the Allow Wake Timers option in power settings.

    I have gone through the device manager and turned off the allow this device to wake the PC on the network card and others.

    But its still waking up by an "Unknown" source. It's not the same time every night. I am going crazy with this.

      My System SpecsSystem Spec

  2. #2


    Posts : 1,320
    Server 2012 / 8.0


    Was the mouse and keyboard unticked in device manager?

    Click image for larger version

    Click image for larger version
      My System SpecsSystem Spec

  3. #3


    I'll check those when I get home tonight, but it's a wireless mouse and keyboard. Even when I have turned them both off and unplugged the usb receiver from the machine, it still wakes up. Wouldn't that prevent any signal from making it back to the system?
      My System SpecsSystem Spec

  4. #4


    Posts : 1,320
    Server 2012 / 8.0


    Quote Originally Posted by Jezo View Post
    I'll check those when I get home tonight, but it's a wireless mouse and keyboard. Even when I have turned them both off and unplugged the usb receiver from the machine, it still wakes up. Wouldn't that prevent any signal from making it back to the system?
    I don't know, but I would go thru all your advanced settings from power options to see if anything else could stop the wakeup.

    Click image for larger version
      My System SpecsSystem Spec

  5. #5


    Posts : 2,156
    Win7 Ult on DIY; Win8 Pro on MBP/Parallels; Win7 Ult on MBP/Boot Camp; Win7 Ult/Win8 Pro on HP


    Quote Originally Posted by Jezo View Post
    I'll check those when I get home tonight, but it's a wireless mouse and keyboard. Even when I have turned them both off and unplugged the usb receiver from the machine, it still wakes up. Wouldn't that prevent any signal from making it back to the system?
    Check this thread out: Devices - Allow or Prevent to Wake Up Computer - Windows 7 Help Forums.
      My System SpecsSystem Spec

  6. #6


    Quote Originally Posted by znod View Post
    Quote Originally Posted by Jezo View Post
    I'll check those when I get home tonight, but it's a wireless mouse and keyboard. Even when I have turned them both off and unplugged the usb receiver from the machine, it still wakes up. Wouldn't that prevent any signal from making it back to the system?
    Check this thread out: Devices - Allow or Prevent to Wake Up Computer - Windows 7 Help Forums.
    Thats the command I ran, the one that lists what can wake up the PC.

    Mine comes back saying nothing can and then in the system log it says wake source is "Unknown"
      My System SpecsSystem Spec

  7. #7


    Posts : 474
    Win 8 (64) : Win 7 (64) : Vista (64) : Android JB 4.2 : iOS 6


    It's probably the automatic scheduled maintenance update.

    Windows 8 automatically configures a "Regular Maintenance" event in TaskScheduler to run at 3:00 AM every day. After initial installation of Window 8, Windows Update is preconfigured to initiate the regular maintenance task and wake event to ensure that it is run.

    To prevent the Regular Maintenance task from waking the machine at 3:00am, go to Action Center / Automatic Maintenance and disable the checkbox for “Allow scheduled maintenance to wake up my computer at the scheduled time”.
      My System SpecsSystem Spec

  8. #8


    Posts : 2,156
    Win7 Ult on DIY; Win8 Pro on MBP/Parallels; Win7 Ult on MBP/Boot Camp; Win7 Ult/Win8 Pro on HP


    Quote Originally Posted by Jezo View Post
    Quote Originally Posted by znod View Post
    Quote Originally Posted by Jezo View Post
    I'll check those when I get home tonight, but it's a wireless mouse and keyboard. Even when I have turned them both off and unplugged the usb receiver from the machine, it still wakes up. Wouldn't that prevent any signal from making it back to the system?
    Check this thread out: Devices - Allow or Prevent to Wake Up Computer - Windows 7 Help Forums.
    Thats the command I ran, the one that lists what can wake up the PC.

    Mine comes back saying nothing can and then in the system log it says wake source is "Unknown"
    I see; sorry to not read closely enough to realize I suggested something you already tried.
      My System SpecsSystem Spec

  9. #9


    Quote Originally Posted by fourthofjuly View Post
    It's probably the automatic scheduled maintenance update.

    Windows 8 automatically configures a "Regular Maintenance" event in TaskScheduler to run at 3:00 AM every day. After initial installation of Window 8, Windows Update is preconfigured to initiate the regular maintenance task and wake event to ensure that it is run.

    To prevent the Regular Maintenance task from waking the machine at 3:00am, go to Action Center / Automatic Maintenance and disable the checkbox for “Allow scheduled maintenance to wake up my computer at the scheduled time”.
    That also has been turned off for some time now.

    Why wouldnt the log tell me anything? Unknown is a pretty weak answer for Windows to report what is waking it up.

    I have also checked the bios, all the wake timers in there are turned off.
      My System SpecsSystem Spec

  10. #10


    Yesterday I unplugged everything from the PC, even the network wire from the router and there is no wireless card in there.

    At 10:27 it popped back to life.

    Again the reason for the wake was listed as "Unknown" in the system log.

    WHAT IS THIS MAGIC THAT IS WAKING UP MY PC!?!
      My System SpecsSystem Spec

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Something keeps waking up my PC and I cant figure out what
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