INT 15 - Advanced Power Management v1.2 - TURN OFF SYSTEM                       
	AX = 5307h
	CX = 0003h
	BX = 0001h (device ID for all power-managed devices)
Return: after system is resumed
	CF clear
Notes:	if supported by the system's power supply, turns off the system power
SeeAlso: AX=5307h/CX=0001h"STAND-BY",AX=530Bh