Hi allanc
You can enable or disable Hibernation
Read here for more detail -
Windows 7 Hibernation
Try this link for Vista it should work in Windows 7. Let us know if it does
Quote:
Here's a way to remove the sleep function in the shutdown menu:
* Click Start, Run
* Type "regedit"
- If you want to disable sleep for all users, go to HKey_Local_Machine\Software\Policies\Microsoft\
- If you want to disable sleep for the current user only, go to HKey_Current_User\Software\Policies\Power\ and skip the next 2 steps.
* In the right pane, rightclick and choose "new","key".
* Type "Power"
* Again, in the right pane, rightclick and choose "new","key".
* Type "PowerSettings"
* Once more; in the right pane, rightclick and choose "new","key".
* Type "abfc2519-3608-4c2a-94ea-171b0ed546ab"
* Now, in the right pane, rightclick and choose "DWord (32 bit)-value"
* Type "ACSettingIndex"
* Doubleclick this entry and set it's value to 0 (Hexadecimal)
* Reboot or logoff and logon and sleep is gone from the shutdown menu.
This however, does not remove the sleep option from the new start menu, but it'll be greyed-out.
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Read more here -
Removing the Sleep function in the Shutdown menu