Bitfields for power management status:
Bit(s)	Description	)
 0	POWER.EXE power management enabled
 1	APM firmware power management enabled
 2-7	reserved (0)
Notes:	bit 1 is ignored if there is no APM firmware
	bits 1-0: 00 = POWER OFF, 10 = POWER STD, 11 = POWER ADV