My pc has sleep time 2 hour in charge plug or unplug mode. When i fowloce big files and leave pc inactive and do other work .but when i return i find pc hibernated before 2 hour. Means my pc hibernates before sleep time comes. So i am troubled by this cause i have to download big files again and again from the i have some questions1. Is there any preset time for hibernation in windows 8?if yes then what is time and how to manage it?2. Why hibernating self before sleeping.Regards for helping hands