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I own a laptop(HP Pavilion DV7) with Windows 7 installed for already half a year.
Usually when I finish my work I do not turn machine off - closing is enough to get is into "Sleep" state.

Generally it's okay for me, but recent several days laptop was turning on in night spontaneously, while I was sleeping.

  • I haven't installed any app with "turn-on by schedule on when_dooes_pc_wants"-like features.
  • Checked if there are some "Wake-On-Lan"-like settings in BIOS, haven't found ones.
  • The power-cable is always plugged-in.

Does someone have any suggestions regarding that?

p.s. laptop is placed right near by bed, so when it turns-on on night - it is quite annoying and a bit scary. I think it's trolling me, please help to stop it :)

Thanks.

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  • Alas, this is semi-normal for Windoze. Though I haven't seen it as much with 7 as with Vista.
    – Daniel R Hicks
    Commented Apr 6, 2012 at 11:23

2 Answers 2

Reset to default
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Check device drivers in Device Manager, see if any are set to "allow this device to wake computer", disable them.

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  • Found that "Allow device to wake the computer" flag was enabled for mouse; Probably it's sensitive enough to react on environment events(nearby subway, human steps, etc). Switched flag-off, think that helped. Thanks a lot!
    – alexb
    Commented Apr 6, 2012 at 15:10
  • Hmmm, I don’t think this is the cause for mine (I’m fairly sure I already checked everything), but it certainly would explain why it turns on at random times. I’ll check it tomorrow to be certain. @alexb, thanks for specifying which device it was that caused it for you.
    – Synetech
    Commented Aug 3, 2012 at 2:18
  • My computer has a whole lot of devices attached to it. I don't suppose there's a way to just auto magically get a list of all devices that have that checkbox checked?
    – neubert
    Commented Feb 17, 2014 at 16:40
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    @neubert: powercfg.exe /devicequery wake_armed at an Administrator command prompt. powercfg.exe /lastwake is also useful
    – Ben Voigt
    Commented Jul 24, 2014 at 17:48
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In addition to moab's answer, you can usually find out which device was responsible for waking the computer as follows:

  • Open a command prompt: Hit the windows key, type "cmd", and press enter.
  • In the command prompt, type "powercfg /lastwake"

Using /lastwake is not perfect, but you can usually tell if it's an USB device or a network card that's waking the computer. If the device was woken up by one of the network cards, the issue is often that Wake On LAN is enabled but not requiring a magic packet.

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