ATX Power Supply

Is there an option which you can enable to make a computer using an ATX Power Supply resort to last state it was in before power a failure.The idea is that in my area we have frequent power outages , so sometimes no one will be in the office when the power is restored, I would be glad to have the CPU automatically switch ON.I am using an Intel (R) Celeron CPU 1.70GHz.
Would Appreciate any help.