No hibernate option in Windows 8.1 Pro tablet even after "powercfg -h on"

Solution 1:

Solved it. The following .REG file enables the Hibernate option for Charm and Win+X menus:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FlyoutMenuSettings]
"ShowHibernateOption"=dword:00000001
"ShowLockOption"=dword:00000001

It's still not listed in Control Panel, but I don't care anymore.

Updated, on another machine I also had to use this .REG file:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power]
"HibernateEnabled"=dword:00000001

And to run this:

powercfg.exe /h on 
powercfg /h /type full