1. Open a Elevated Command Prompt.

2. To Enable Hibernate -

A) In the elevated command prompt, type powercfg -h on and press Enter. (See screenshot below)

Hibernate - Enable or Disable-enable.jpg

B) Now set your Power Plan settings to the recommended settings for Hibernate

C) Go to step 4.

3. To Disable Hibernate -

A) In the elevated command prompt, type powercfg -h off and press Enter. (See screenshot below)

Hibernate - Enable or Disable-disable.jpg

4. Close the elevated command prompt.

METHOD TWO:
Through Power Options

1. Open Power Options to change the advanced power settings, and expand Sleep and Hibernate after. (See screenshot below)

Hibernate - Enable or Disable-power_options.jpg

2. To Disable Hibernate -

A) Under Hibernate after, set the Setting (Minutes) to Never. (See screenshot above)

B) Under Allow hybrid sleep, set Setting to Off.

C) Click on OK.

3. To Enable Hibernate -

A) Set the Setting (Minutes) to how many minutes your computer is inactive for before hibernating, then click on OK. (See screenshot above)
NOTE: See the recommended settings for Hibernate in Power Plan settings for more on this.