I recently installed windows 8 RTM, but found a very annoying thing. My PC always powered on automatically even in midnight. Eventually I noticed that I can power on the PC by pressing keyboard or mouse, and even moving mouse. After searched this in google, I turned off Sleep and Hibernate in Power Options - System Settings - Shutdown settings, but it still did not work. Would anyone please help me? I don't want to suffer from the noise of PC powering on in midnight any more. Thank a lot.