I have had this problem with my desktop machine for over 24 months and the only reason I put up with it is because I thought it was the motherboard being crappish. That PC was running Windows 7 and then Windows 10.

  • To prove 100% it was not LAN magic packets I unplugged the Network
  • I also unplugged Keyboard and Mouse to prevent wake on USB
  • I turned of all BIOS related setting for wake up I could find
  • Turned of all allow on wake from on Network devices in Windows

Nothing sorted the problem. Everything but power was unplugged it kept comming out of sleep. Sometimes even 5 seconds after it went to sleep. The only solution was for me to pull the power cable out every night...

Now I got rid of that machine and got a Dell Latitude and the flippen things turns on at night on its own again??!?!? Not only that but my wife's Acer started doing the same thing.

I seriously do not know why this started happening. For years I have used sleep mode and it worked fine now all of a sudden the machines are arising .. ehm . waking on their own the whole bloody time.

Anybody know what this is?? Maleware in my BIOS? Printer sending out magic packets? Really annoying me now ...

  • Have you looked at some of the answers on this question: superuser.com/questions/113801/… – Bungicasse Jan 12 '17 at 9:28
  • Ahh thanks. I found an entry in my Event Log saying it woke my machine up for a reboot :angry: and hundreds of the same.. why?? – Piotr Kula Jan 12 '17 at 9:48

Turns out Windows can wake it self up for whatever reason it like. It seems like it just keeps on sending wake events to reboot, as I have found out from the event log. More info thanks to this answer

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And hidden deep inside power options is this little basterd.

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I have set it to disabled and going to go look and my wife's machine too. Looks like the cause of the problem but need to leave it a while before I can verify that.

  • It might be related to a rouge update that never cleared the registry keys... I remember having a similar problem – TonyMorello Jan 12 '17 at 13:17
  • In my case: Wake Source: Unknown. Great... – Jay Sullivan Jun 14 at 23:38

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