Wouldn't a power failure during windows update be the same problem whether it was automatic or user-selected? If a user options to update, during restart, say, and the power fails soon after, what can the user do to prevent the possible boot sector corruption mentioned by labeeman (Thanks)? Supposing there is a ten-minute UPS reserve and the update takes fifteen?

Has Microsoft addressed this problem? Could there be a button to allow an immediate Hibernate, or a setting to Hibernate during power failure--even during Update time? I understand that Windows may no longer running, but so what, something needs to be done.