Analysis of power Management in Windows 2000

Windows 2000 (including Microsoft Windows Professional, Microsoft Windows SQL Server, Microsoft Windows Advanced Server) is A new generation of operating systems based on NT core (operating System,os). Win2000 with its reliable, stable performance, strong network functions and other advantages by everyone's favor. Win2000 more and more friends, it is necessary for us to have a deeper understanding of Win2000. Win2000 powerful, hardware requirements are also high, more prone to hardware compatibility problems, which we encountered the compatibility problem is often related to power management: for example, Bois version of the earlier machine can not install Win2000, some machines even install Win2000, But when you start hibernation, there is a panic, inexplicably appear CPU fan does not turn, can not automatically shutdown, need to manually shutdown and so on. Below let us uncover the secret of Win2000 power management.

Windows 2000 uses a number of new technologies to be more stable and reliable, with power management supporting Advanced Power Management Win2000 (Advanced-Management, APM), Advanced configuration, and Power Interface (Advanced Configuration and Power interface,acpi) are two ways to manage electricity. Advanced Power Management (APM) consists of one or more software tiers that support power management of manageable power hardware in your computer. APM defines a hardware-independent software interface, which is independent of the hardware-specific power management software and the operating system power management policy driver. It does not focus on the details of the hardware, enabling the high level software to use APM without having to know any hardware interfaces. The Advanced Configuration and Power Interface (ACPI) is an open industry specification that defines a flexible, extensible hardware interface for the motherboard. Software designers use this specification to integrate power management capabilities into the entire computer system, including hardware, operating systems, and programs. This integration enables Win2000 to determine which program is active, and to handle all power management resources for the computer subsystem and peripheral devices. Therefore, the motherboard BIOS version of the computer that installs, runs Win2000 should support ACPI, or some Bois versions of the computer based on APM and Plug and Play design.

Some motherboards now support ACPI functionality, but support is not perfect. If you install Win2000 on such a machine, it is likely that there will be strange problems. For example, a friend of a few days ago installation Win2000 Professional, installation is very smooth, but when the start of the inexplicable strange, in the boot did not enter Win2000 when the machine all normal, one into the win2000cpu fan immediately stop, exit Win2000 after the CPU fan again turn , I helped him to the Bois brush to the latest, all hardware pull down the reload, turn off the Win2000 of sleep, several times, a WIN2000CPU fan still stop. No way only wronged Apci, will bois in the a function set to disable off ACPI, back to the Win2000. Looks like this dude's motherboard is not perfect for ACPI support. When I was in a helpless moment, it occurred to me that Win2000 also supports Advanced Power Management (APM), so you don't have to ACPI to use APM. In the Bois, the ACPI is turned off, the Win2000 disc is restarted, and the reinstall Win2000 is selected (do not select a repair installation). Wait for a long half hour, Win2000 installed, after the restart I have been staring at the CPU fan, hehe ... The CPU fan worked properly after Win2000, and I was ecstatic. It turned out to be ACPI's ghost. (Programming Entry Network)

So how do you know if your motherboard does not support ACPI? Tell you a way to put your motherboard BIOS brush to the latest, in http://www.microsoft.com/hwdev/acpihct.htm download ACPI HCT V1.61.exe, run tests under Win98 Some BIOS is not ACPI-compliant, if supported, install Win2000 may not have ACPI-related problems, if not supported, can also install Win2000, just a little trouble, change some settings: The BIOS in the " The ACPI Function "is set to Disable." After installing the Win2000, start → settings → control panel → power Options → advanced power management support for Advanced Power management is set to start. However, Win2000 does not support hibernation in APM mode, and hibernation in APM State may be a shutdown.

ACPI makes the computer more intelligent, with Microsoft's 64-bit operating system, Win2000 's next version of Whistler will be turned to support the ACPI 2.0 fixed platform (ACPI 2.0 fixed tables), Whistler Beta 2 later Whistler version may only support ACPI 2.0, use Whistler Trial version of Friends if there is a startup sleep panic, not shutdown, and so on, it may be that your motherboard is ACPI is not perfect, we recommend that you turn off ACPI, If not, you may have to go back to the Win98 bar! Oh......