Most of the BIOS settings I've seen for newer boards have 3 settings available for how to act after a power failure: Stay Off, Turn On, or Last State. Last State is supposed to remember whether the system was powered or not. I use Stay Off for my home PC, but if I were running a web server I'd set it to Last State.
<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>