Very unlikely this has anything to do with software. (Though installing with ACPI disabled can lead to weird behavior with some BIOSs) If it's coming back up after a shutdown it's a hardware problem or most likely an interaction between the PSU and BIOS.
More BIOS settings:
Is it set to reboot on power fail/loss? Disable it.
Is ACPI disabled?
Does anyone in the household own a TrapperKeeper 2000? 
__________________
There are a vast number of people who are uninformed and heavily propagandized, but fundamentally decent. The propaganda that inundates them is effective when unchallenged, but much of it goes only skin deep. If they can be brought to raise questions and apply their decent instincts and basic intelligence, many people quickly escape the confines of the doctrinal system and are willing to do something to help others who are really suffering and oppressed." -Manufacturing Consent: Noam Chomsky and the Media, p. 195
|