Possible Duplicate:
How do I determine the cause of resuming from hibernation in Windows 7?
I have a Sony Vaio laptop with Windows 7 Home Premium x64. First I was having a problem with the machine waking from sleep mode by itself. I went through all the steps to disable everything that could cause it to do that, but it still wakes itself. The "Last wake" list says that my mouse was the last device to wake the machine, however the mouse has an USB transmitter that I remove as soon as it sleeps and my touchpad is disabled. Because I couldn't get it to stay asleep, I've started putting it in hibernation mode (usually by pressing the Fn+F12 keys which Sony says is for hibernation).
However, the last couple of nights the laptop has awakened from hibernation (I'm pretty sure that it's really in hibernation as the power button goes dark instead of flasing amber as when in sleep mode) all by itself (I didn't even think it was possible for it to do that!). I have checked everything that has been suggested to keep the machine from waking itself from sleep mode and everything is disabled. Powercfg shows no devices armed to wake the machine and the "lastwake" list is empty(?). It's like magic. Since this is a brand new machine, less than a month in use, I would think that a faulty power button would not be an issue, but even if it were, there is absolutely nothing that could bump the machine to jiggle the button in order for it to make contact. Also, when I wake the machine from hibernation I have to press the power button firmly in order for it to make contact. Further, were it a faulty power button, one would think that it would occasionally turn itself on from being shut down completely, but it has never done that.
I contacted Sony Vaio Support and as has been my experience with support from HP, Dell, Acer, etc., etc., they seem to know less about the machine's operation than I do. And as usual, their fix (their fix for everything) is to restore the machine to factory specs, which means I loose days worth of installing and configuring programs and then reconfiguring the machine itself. As a very last resort I have done this and there is still no change.
Just to be sure everyone understands, my laptop is waking from hibenation not sleep.
