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Windows 7 Hibernate Problem
There are at least two different types of hibernation problems. One problem is that your computer is not waking up properly. Alternatively your problem is there is no Hibernate option on the Windows 7 Shut Down menu. In both cases check the 'Allow hybrid sleep' setting.
1) For any hibernation problems the easiest solution is to set 'Allow hybrid sleep' to: 'Off'. (See screenshot).
By design, hybrid incorporates both Sleep and Hibernate, thus you only see Sleep on the Shutdown menu. Also, by default, desktops are set to 'Allow hybrid sleep :On'.
Trap: Before you can change any of the Balanced settings, first you must click on Change settings that are currently unavailable. (See screenshot)
Leia mais sobre os problemas de hibernação aqui .