How can I prevent my computer from waking up accidentally?

Posted by Ivo Flipse on Super User See other posts from Super User or by Ivo Flipse
Published on 2012-10-27T21:15:38Z Indexed on 2012/10/30 11:06 UTC
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windows-8

When I put my computer into sleep mode, it will wake up while I'm away from it. There's nothing near the computer that could move the mouse or accidentally press a button and I have no idea what might be causing it.

I tried checking what woke it, apparently LASTWAKE only tells me that it has been in sleep mode, not what woke it up.

enter image description here

I also couldn't find anything in my Power Options regarding Sleep that seems off. Poking around in the Event Viewer I notice the following: enter image description here

The Power-Troubleshooter event at the top notes the following:

The system has returned from a low power state.

Sleep Time: ?2012?-?10?-?27T11:31:53.408927000Z Wake Time: ?2012?-?10?-?27T12:25:51.887029300Z

Wake Source: Unknown

So does anyone have an idea to find out what might be causing it and how I can prevent my computer from randomly waking up?

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