Vista: Enable / Disable Hibernate Mode from the Command Line
Contributed by Rob Rogers 
Tagged: Green computing Microsoft Vista Instead of using the GUI (Control Panel | Power Options | Power Plan) to enable or disable Hibernate, you can do this from the command line.
1. Click the Start button.
2. Click All Programs and select Accessories.
3. Select Command Prompt.
To Enable Hibernate mode, use the following:
powercfg /hibernate on
To Disable Hibernate mode, use the following:
powercfg /hibernate off
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ba ba said on June 17, 2009
thankyou so much for your help,