If I put my PC to hibernation and then unplug it, will it drain the motherboard battery? I've read a lot of posts, but this is one thing I haven't seen, because of laptop users. Does hibernation drain any power at all on Desktop PC?
2 Answers
The motherboard battery is only used to preserve the real-time clock and CMOS settings. Hibernation saves your computer's state to the hard drive.
answered Aug 5, 2014 at 11:19
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1Yeah, the "drain" is exactly the same as it would be with the OS "shut down". Commented Aug 5, 2014 at 12:07
If you've unplugged your desktop computer, you're no longer in "hibernate" mode... that thing is off. The motherboard battery only stores clock and CMOS settings, as other users have said, but it doesn't power any of the other components of your computer. It can't, even if it wanted to, so whether your computer is on, off, hibernating, plugged in or unplugged makes no real difference.
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Hibernation stores the state to the hard drive, you must be confusing it with sleep mode. So no, unplugging a PC in hibernation mode will not invalidate its hibernating state. Commented Jul 14, 2016 at 13:40