If you have no hibernate option next to the shutdown button on Windows7, here are the
steps you need to enable it:
Run a command prompt as Administrator:
Programs -> Accessories -> Command Prompt -> left click -> Run As Administrator
Type the following command:
powercfg /hibernate on
If required, apply the following configuration:
Control Panel -> Power Options -> Change when the computer sleeps -> Change advanced power settings -> Sleep -> Allow hybrid sleep -> Setting: OFF
Now the button for hibernate should be available.