Windows 2000 Power Management

Windows 2000 (including Microsoft Windows 2000 Professional, Microsoft Windows 2000 Server, Microsoft Windows 2000 Advanced Server) is a new generation operating system (OS) based on the NT core. Win2000 is favored by everyone for its reliable, stable performance and powerful network functions. There are more and more friends who install Win2000. It is necessary for us to understand Win2000 in depth. Win2000 is powerful and has high hardware requirements. It is more prone to hardware compatibility problems. The compatibility problems we encounter are often related to power management: for example, machines with earlier BOIS versions cannot install Win2000, and some machines even install. Win2000, but there is a crash when starting hibernation, somehow the CPU fan does not turn, can not automatically shut down, need to manually shut down and so on. Let us uncover the secrets of Win2000 power management.

Windows 2000 uses a number of new technologies for more stable and reliable use, including advanced power management (APM), advanced configuration and power interface (Advanced Configuration and Power) in power management. Interface, ACPI) Two power management methods. Advanced Power Management (APM) consists of one or more software layers that support power management of manageable power hardware in a computer. APM defines a hardware-independent software interface that is independent of hardware-specific power management software and operating system power management policy drivers. It does not pay attention to the details of the hardware, so that the higher level software can use APM without knowing any hardware interface. The Advanced Configuration and Power Interface (ACPI) is an open industry specification that defines a flexible, scalable hardware interface for the motherboard. Software designers use this specification to integrate power management functions throughout the computer system, including hardware, operating systems, and programs. This integration allows Win2000 to determine which program is active and handle all power management resources for the computer subsystem and peripherals. Therefore, the BIOS version of the computer motherboard on which Win2000 is installed and running should support ACPI, or some computers based on APM and Plug and Play designed BOIS versions.

Some motherboards now support ACPI, but the support is not perfect. If you install Win2000 on such a machine, it is very likely that something strange will come back. For example, a friend of a few days ago installed Win2000 Professional, the installation was very smooth, but there was a strange strange thing when starting up. When the boot was not into Win2000, the machine was all normal. Once the Win2000 CPU fan stopped, the CPU fan turned on after exiting Win2000. I helped him to brush BOIS to the latest, all hardware unplug and reinstall, turn off the sleep of Win2000, restarted many times, and the fan of Win2000 CPU still stopped. There is no way to only grievance APCI, set the A Function in BOIS to Disable to turn off ACPI, and then restart Win2000. It seems that this man's motherboard is not perfect for ACPI support. When I was at a loss, I suddenly remembered that Win2000 also supports Advanced Power Management (APM), so I don't need ACPI, I use APM. In the BOIS, close the ACPI, restart the machine with the Win2000 CD, and choose to reinstall Win2000 (do not choose to repair the installation). Waiting for a long half hour, Win2000 installed, I have been staring at the CPU fan after restarting, huh, huh... After entering Win2000, the CPU fan is working normally, I am ecstatic. It turned out to be the ghost of ACPI.

So how do you know if your motherboard doesn't support ACPI? Tell you a way to brush the BIOS of your motherboard to the latest, download ACPI HCT v1.61.exe, run the test under Win98. Some BIOS supports ACPI. If supported, installing Win2000 may not cause ACPI problems; If you don't support it, you can install Win2000. It's just a little trouble. Change some settings: Set "ACPI Function" in the BIOS to "Disable". After installing Win2000, set "Start Advanced Power Management Support" of "Start" → "Settings" → "Control Panel" → "Power Options" → "Advanced Power Management" to start. However, Win2000 does not support hibernation in APM mode. Sleeping in APM state may be equivalent to shutdown.

ACPI makes computers more intelligent. In Microsoft's 64-bit operating system, the next version of Win2000 Whistler will turn to support ACPI 2.0 fixed tables, Whistler Beta 2 and later Whistler versions may Only support ACPI 2.0, friends who use the Whistler trial version if there is a problem of starting hibernation, not shutting down, etc., it may be that your motherboard ACPI is not perfect, I suggest you turn off ACPI, if you still can't, you may have to return to warm Bar (Win98)! Hehe...