Note: Hibernate mode is not an option on systems with 4GB of RAM or more.
Enable or Disable Hibernate Through Command Prompt
Using the Command Prompt might be the easiest way to enable or disable Hibernation. Click on Start and type CMD into the search box and it will be listed under programs. Right-click on the icon and select Run as administrator.
The Command Prompt opens and you will use the following to enable Hibernation.
powercfg /hibernate on
Type in the following to disable hibernation.
powercfg /hibernate off