NEC Versa Series Windows 2000 Power Management States, Windows 2000 Power Management Behavior

Windows 2000 Power Management States

ACPI uses different levels or states of power management. The power management states occur automatically, based on the system’s default settings, or manually, when invoked. Settings are configurable to occur while on battery power or AC power.

The Windows 2000 ACPI power management states include:

!LCD timeout — manages power at the lowest level by shutting down the LCD.

!Standby — also known as Save-to-RAM (STR), Standby manages power by saving your current working environment to memory and shutting down most system devices. Conserves more power than an LCD timeout.

!Hibernate — also known as save-to-disk, or save-to-file (STF) manages power by saving the current working environment to an area on your hard disk, then powering off your system. Conserves the most battery power.

Recognizing the Windows 2000 Power Management States

It is important to recognize your system’s behavior when in each of these power management states. The following table describes the system behavior for each power management state.

Windows 2000 Power Management Behavior

	LCD Timeout	Standby (STR)	Hibernate (STF)
Default	2 Minutes, DC power	5 Minutes, DC power	30 minutes after Standby.1
Setting

	15 Minutes, AC power	20 minutes, AC power
Manually	Close LCD panel.	Go to Start, Shutdown,
Invoke		Standby.
System	LCD panel is blank.	LCD panel is blank.
behavior	Status LED lights	Status LED blinks green.
	green.

Close LCD panel.2 Press Power button.2

LCD panel is blank. Status LED turns off.

Progress bar indicates that current working environment is saved to hard disk.

Resume	Press any key.	Press Power button.	Press Power button.
			Progress bar appears
			during process.

1When 3% battery power remains.

2Only when set in Advanced Windows Power Management Properties.

3-16 Using the BIOS Setup Utility