How to Disable hibernation in windows 7

[ModeratorNA]

By default Windows 7 will permanently use large space of your hard disk with its hibernation file. If you never use sleep option and always turn your PC off, then this space will never actually be required. To disable hibernation and recover a little hard drive space, Open REGEDIT, browse to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power, then set both HibernateEnabled and HiberFileSizePerfect to zero.