Add Hibernate and sleep option in Windows8
By default Hibernate or Sleep won't appear in the Windows 8 shutdown dialogs, however you may be able to restore them.
Launch the Power Options applet (powercfg.cpl) and click "Choose what the power buttons do" in the left-hand pane.
If you see a "Change settings that are current unavailable" link, then click it, check the Sleep and Hibernate options, click Save Changes, and the new options should now appear in your shutdown dialogs.
