We all know that Hibernate Avoid Losing our Work.
Hibernate saves an image of your desktop with all open files and documents, and then it powers down your computer. When you turn on power, your files and documents are open on your desktop exactly as you left them.
How to put your Tablet PC into hibernation when your battery power reaches a critically low level
1.On the taskbar, tap the Start button, and then tap Control Panel.
2.Tap Performance and Maintenance, and then tap Power Options.
3.Tap the Hibernate tab, select the Enable hibernation check box, and tap Apply.