Hibernation on and off

To make hibernation unavailable, follow these steps:
Click Start, and then type cmd in the Start Search box.
In the search results list, right-click Command Prompt, and then click Run as Administrator.
When you are prompted by User Account Control, click Continue.
At the command prompt, type powercfg.exe /hibernate off, and then press ENTER.
Type exit and then press ENTER to close the Command Prompt window.
To make hibernation available, follow these steps:
Click Start, and then type cmd in the Start Search box.
In the search results list, right-click Command Prompt, and then click Run as Administrator.
When you are prompted by User Account Control, click Continue.
At the command prompt, type powercfg.exe /hibernate on, and then press ENTER.
Type exit and then press ENTER to close the Command Prompt window.