hibernation prob in vista

[kratosal]

i accidently deleted hibernation.sys file required for hibernate option from disk cleanup and now my hibernation option (windows vista premieum in a notebook) is gone. how could i bring back this setting.i tried in power option through control panel and also the windows help but got no real help. so if you please could sort it out as i am in good habit of making my system hibernate rather than shut down or sleep. thanx have a good day.

[yogeshm.007]

Disable hibernation and then again enable it. It should work.