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I have been using Windows 8 x64 Developers Preview as my primary OS on my laptop.

Unfortunately I have been unable to enable hibernate (tried through registry and through powercfg.cpl). The closest I have got is that I was able to enable hibernate on pressing of power button, but that just turns of screen and keeps everything else running, I have to force shutdown to do anything.

Do you know how I can get hibernate to work on my Dell Studio 17?

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You realize this is pre-beta software that is full of bugs and not a complete OS? – Moab Nov 14 '11 at 4:39
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Lies!! But it boots up! – surfasb Nov 14 '11 at 7:21
Can you sleep? Did it hibernate before in Windows 7? Does the Bios support hibernate? – Guy Thomas Nov 23 '11 at 16:56
It hibernated fine on Windows 7. – A T Nov 28 '11 at 13:33
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3 Answers

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Hibernation system in Windows 8 has been improved. Look at this article for more info: http://blogs.msdn.com/b/b8/archive/2011/09/08/delivering-fast-boot-times-in-windows-8.aspx

Anyway the classic Windows 7 method to enable hibernation should work also for Windows 8.

Run a command prompt as administrator and write:

powercfg -h on
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Made no difference. Anyway, I'll be upgrading to Consumer Preview in the next few days, hopefully they have fixed it in that. – A T Mar 11 at 8:35
On Consumer Preview now, and hibernate still doesn't work. And yes, it worked fine on Windows 7. – A T Mar 18 at 16:43
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Windows 8 uses hybrid sleep by default - it saves image to disk, leaves system memory up and running while power source lasts. Windows 7 has same as an option.

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Yeah, but I can't modify it – A T Mar 11 at 7:56
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up vote 0 down vote accepted

Finally got it working, using a tutorial I tried for Developer Preview, where it failed.

On Windows 8 Consumer Preview however, it worked, and the "hibernate" choice now appears in the shutdown menu.

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