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I have hibernate enabled, everything should work fine. When I press the hibernate, screen goes black (as expected), but after a short time the disk LED stops flashing, and computer turns off strangely fast. Then when I try to turn on the computer again, it just displays the standard

windows didn't shutdown properly last time

so it gives me an option to start the Windows in Normal mode or Safe mode. I choose Normal mode and computer boots. But it should actually restore the previous session! Does anybody know where a problem can be? I am definitely sure it should hibernate, as there is no "Logging out" screen, just the black screen, as expected.

I have already tried recreating the hibernation file, the problem persists.

Update

So I've updated all the drivers, and the problem still persists. Is there anything else than clean install/repair?

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What is your computer model? – KronoS Aug 31 '10 at 17:22
@KronoS: Dell Latitude XT2 – Paja Aug 31 '10 at 21:05
I'm not sure if this would be logged, but have you checked the system event log for any updates around hibernation? – Default Sep 3 '10 at 11:34
@Michael: Yes, I have checked event log, but haven't found anything related. – Paja Sep 3 '10 at 13:31
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4 Answers

up vote 1 down vote

Try looking at your manufacturer / motherboard makers website and see if there are any updated drivers - especially if the machine was not shipped with Windows 7 as this could be a bug or a feature that requires something extra.

Also check the BIOS to make sure it is fully supported / configured as sometimes there is an option that needs to be set.

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I've updated all drivers, BIOS does not have any configuration regarding hibernation/sleep. Still, the problem persists. :-( – Paja Aug 31 '10 at 17:51
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up vote 1 down vote

I would check your drivers and make sure they are all up to date as well as the system BIOS. If those all check out I would then use powercfg.exe -energy to check the system out as well.

http://technet.microsoft.com/en-us/windows/ee430886.aspx
http://technet.microsoft.com/en-us/library/cc748940(WS.10).aspx

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I've updated all the drivers, and even run the power check. The check seems OK, only real problems were two erroneous devices: USB Suspend:USB Device not Entering Suspend. But since these are USB devices, I think it shouldn't be a problem. – Paja Aug 31 '10 at 18:58
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up vote 1 down vote accepted

It seems the problem was caused by Mozy backup software, as uninstalling the program probably fixed the issue.

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I am told that Windows hibernate is flakey if you have drive encryption, too. It either won't hibernate, or sometimes it never comes out of hibernate mode.

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