One of the most common problem in Windows Vista is "Missing Hibernate option in startmenu". I get many mails asking for "how to enable the hibernate option in Vista?".
Actually its a known issue in Vista. The hibernate option disappears whenever you run "Disk Cleanup" because Disk Cleanup wizard also removes Hibernate files. So if you use Hibernate then make sure you deselect "Hibernattion File Cleaner" option from the list in future.
Anyway its very easy to re-enable missing Hibernate option by following these simple steps:
1. Click on "Start button -> All Programs -> Accessories". Right-click on "Command Prompt" and select "Run As Administrator". If you are prompted to enter password, enter the password and continue. You can also open Command Prompt in Administrator mode by typing "cmd" in Startmenu Search box and press "Ctrl+Shift+Enter".
2. Now provide any of following commands:
powercfg /hibernate on
powercfg -h on

3. Exit command prompt and Hibernate option should appear in Startmenu.
This article was posted by VG in following section: Troubleshooting, Windows Vista.
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Denish
thanks alot ...................................................................................
alex
I tried powercfg/hibernate on to re-install/reactivate my lost "hibernate" option and worked fine. Thank you so much. :)
Sassi
Thank you very much! Worked perfectly! :)
farooq
Anyone know how to get the Control+f5 button (locking computer short key) functioning again on a HP pavilion using Win Vista??
Thanks
VG
^^ You'll need to install the bundled application which you got with your system while purchasing. It might be possible that HP provides the app on their website so you can take a look there.
Angelo
thanks!
Babaa
thanks, it works
ceeya
thanks it worked!!! :)
Uewd
This command works also for Windows 7. Does it work on xp?
wtf
thanks