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When I place my PC to sleep, it goes to sleep for 2 min and then wakes up again on its own.

I ran cmd.exe as an admin and then typed powercfg -last wake and -requests and I got nothing really that can direct me to figure this out. Any other suggestions? I've disabled many devices from waking the system up already including the keyboard (but not the mouse).

C:\Windows\system32>powercfg -lastwake
Wake History Count - 1
Wake History [0]
  Wake Source Count - 0

C:\Windows\system32>powercfg -requests


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When it happened to me it was the network card. No answer, since I don't remember exactly what I did, but I spent some time in device manager looking for options like "allow this device to wake the computer" and disabling them. –  Steve Jessop Jul 13 '14 at 17:37

10 Answers 10

It could be a Ghost. Or a demon.

Some things that caused this same issue for me were:

  1. I had a very sensitive mouse and even though I was in bed, the mouse would move just very slightly but not noticably, and that woke the PC.
  2. I have also had a problem with USB devices (keyboard/mice/Wireless adapters). Sometimes, and usually over a period of several years, the ports on the PC will become loosened - or something, causing the USB device to move around a little if the desk gets knocked. This caused the PC to play the "USB device removed and inserted" sound and it also caused my PC to wake from sleep.
  3. Check out your Scheduled Tasks. You're bound to have a few if you're not the type to manually delete them all. If updates are cheduled to run in the background this could also be waking your pc. Look out for Google, Apple, Adobe and Java in particular. I always see them in Task Scheduler. And somehow Google update keeps reappearing.
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Also, check this link: howtogeek.com/howto/windows-vista/… –  jay_t55 Jul 13 '14 at 16:13
I have a PC which does the same thing with Google chrome installed on it. It checks for updates every 15 minutes, and thus waking the PC. Google also always tries to revive itself with any service you have installed from them. –  Mixxiphoid Jul 14 '14 at 6:23
I have a Razer Naga mouse that has a dock for charging, it would wake my Winblows PC by just putting the mouse in the charging dock and other random actions, even just moving it. Disabling the waking permissions in the hardware manager helped. –  TC1 Jul 14 '14 at 13:52
Thanks, I will check into Google Chrome's settings since I do use it often, –  Peter A Jul 14 '14 at 15:20
One of the big things with scheduled tasks is to look to see if they have the "Wake the computer to run this task" option set in their settings. That's where you'll know that it was the one. –  Nick Jul 17 '14 at 20:50

There is a certain event in the Event Viewer that may help you troubleshoot spurious wake-up issues. You can find it under Windows Logs > System; look for "Power-Troubleshooter".

Wake Source Event

However, as you see, it's not always helpful. Mine shows "Unknown" even though I woke it up using the power button.

As an IT admin, I can tell you that spurious wake-ups are difficult to diagnose and solve. There are usually a few per 100 computers experiencing spurious wake-ups even though they all have identical hardware and peripherals.

Hopefully your issue is simply caused by a USB device or network connection or such.

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It could be a loose USB port that is causing this. I don't know. My Event Viewer says the device that is causing the reawake is "unknown" so I need to investigate this further by unplugging and replugging some USB devices one by one. Thanks for the info. I'll let you know how it turns out! –  Peter A Jul 14 '14 at 15:21
Steam wakes/prevents sleep on my computer because it hooks the auto and fails to let go of it. The only thing that works is to close Steam when I am not gaming... –  da Boss Jul 16 '14 at 14:36

Tricky one. Last time I had this, it was a new motherboard with a Realtek network card. These have a "wake on any packet" set, which is annoying.

Go to the network adapter properties, power management tab and tick the "Only allow a magic packet to wake the computer". For me, no more waking up at random. Realtek need a ticking off for that one.

I think it did say the waking was due to the network card, but its one place to look. Next: remove all usb devices and see if that helps.

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I did this for my Realtek PCIe GBE Family Controller and no luck. –  Peter A Jul 14 '14 at 15:28

I had the same problem with Intel Smart Connect which as sole purpose has to wake up the pc every 15 min. It got installed through some updater program. Just remove it.

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Hmm... I did some research on the internet and found a little bit out about your problem. It could be:

  • a rusty connection on the USB port or
  • a program or background service (which is hard to find out if it is)

I wonder if running the command: powercfg -devicedisablewake would help.

I haven't really tried this but it is just a suggestion.

If you want another cool way to lock/sleep your computer, check out keylemon (Google it).

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This is giving me an error message. But I'll investigate further, thank you. –  Peter A Jul 14 '14 at 15:32

Simple disable Allow Wakeup Timers or some thing lime that in Control Panel > Power Options > Advanced Power Settings.

Otherwise, if it doesn't work, you may need to go to device manager and, for each device, go to properties and then the power options tab (Not all devices have this).

Here, you should find some checkboxes like "Allow the computer I turn off this device to save power" or "Allow this device to wake up the computer" Depending on the checkboxes checked by default, you should be able to tell if it could be the culprit.

To prevent it from waking up your computer, rather disable "allow this device to wake up this computer", or enable "Allow the computer to turn of this device to save power"

Hope this helps, and sorry if it wasn't too clear, I'm writing from my iPhone.

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I remember having the same problem with my PC years ago and after a little research, found that Windows Media Center was waking my PC up to download TV scheduling information!

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I've disabled that a while ago and just checked and it's still disabled so I don't think that is it. –  Peter A Jul 19 '14 at 17:39

I had this problem on my ASUS Z87 motherboard and the issue turned out to be related to my LAN card and a "wake on LAN setting." Sometimes your LAN card will wake your computer even if it is shutdown!

If you have an ASUS motherboard I can guide you through the process to fix it. If not check for any settings related to "wake on LAN."

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I've already set the LAN Card not to reawaken my PC but to no avail. –  Peter A Jul 19 '14 at 17:38

This may sound unbelievable but my touch screen was "unsleeping" itself when I was not around and the desktop items were often moved when I returned. The culprit? FLIES! walking on my screen and playing havoc.... I had to disable the touch feature over summer when they were more prevalent.

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To add a rather unique wake-up problem to what others already mentioned:

Whenever I mess with electricity in the house, doesn't matter if it's switching something on or off, my computer would wake up. Yeah, standby mode is not an option for this guy.

I verified that it is the electricity causing this, though the reason may very well be my UPS which is connected to the PC via USB for configuration, logging and emergency shutdowns (it supports wake-ups, but I turned them all off).

In short: over-sensitive UPS is an option.

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