How to enable Hibernate option in windows 8.1

Hibernate your PC

1. Open Power Options by swiping in from the right edge of the screen, tapping Search (or if you're using a mouse, pointing to the upper-right corner of the screen, moving the mouse pointer down, and then clicking Search), enteringPower options in the search box, and tapping or clicking Power options.
2. Tap or click Choose what the power button does and under Shutdown settings, select Hibernate (if it's available).

Now you'll see hibernate in these two places:

• In the Power menu in the Settings charm.
• In the Shut down menu.