Disable and Re-enable hibernation in Windows 7

The hibernation feature is used mostly on laptops.
Desktop computers no need to use it usually.

Installation will automatically set up the size of hiberfil.sys to the size of RAM.

(Depending on configuration. In new machines is  approximately 2-8GB).
So in desktop computers we can gain many GBs free space on the system partition.

Turn On and Off:

Automatically:
The Microsoft Fix it two services can be downloaded msi file to run.

Hibernation is enabled .

Hibernation is disabled.

By hand:

Open an Administrative command prompt.

(Search programs and files

CMD

Ctrl + Shift + Enter)

Enable Hibernation powercfg-h on
Disable Hibernation powercfg-h off