Download Motherboard drivers for Windows, firmware, bios, tools, utilities. A boot-start driver is a driver for a device that must be installed to start the Microsoft Windows operating system. Most boot-start drivers are included 'in-the-box' with Windows, and Windows automatically installs these boot-start drivers during the text-mode setup phase of Windows installation.

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The Windows ACPI driver, Acpi.sys, is an inbox component of the Windows operating system. The responsibilities of Acpi.sys include support for power management and Plug and Play (PnP) device enumeration. On hardware platforms that have an ACPI BIOS, the HAL causes Acpi.sys to be loaded during system startup at the base of the device tree. Acpi.sys acts as the interface between the operating system and the ACPI BIOS. Acpi.sys is transparent to the other drivers in the device tree.

Other tasks performed by Acpi.sys on a particular hardware platform might include reprogramming the resources for a COM port or enabling the USB controller for system wake-up.

In this topic

ACPI devices

The hardware platform vendor specifies a hierarchy of ACPI namespaces in the ACPI BIOS to describe the hardware topology of the platform. For more information, see ACPI Namespace Hierarchy.

For each device described in the ACPI namespace hierarchy, the Windows ACPI driver, Acpi.sys, creates either a filter device object (filter DO) or a physical device object (PDO). If the device is integrated into the system board, Acpi.sys creates a filter device object, representing an ACPI bus filter, and attaches it to the device stack immediately above the bus driver (PDO). For other devices described in the ACPI namespace but not on the system board, Acpi.sys creates the PDO. Acpi.sys provides power management and PnP features to the device stack by means of these device objects. For more information, see Device Stacks for an ACPI Device.

A device for which Acpi.sys creates a device object is called an ACPI device. The set of ACPI devices varies from one hardware platform to the next, and depends on the ACPI BIOS and the configuration of the motherboard. Note that Acpi.sys loads an ACPI bus filter only for a device that is described in the ACPI namespace and is permanently connected to the hardware platform (typically, this device is integrated into the core silicon or soldered to the system board). Not all motherboard devices have an ACPI bus filter.

All ACPI functionality is transparent to higher-level drivers. These drivers must make no assumptions about the presence or absence of an ACPI filter in any given device stack.

Acpi.sys and the ACPI BIOS support the basic functions of an ACPI device. To enhance the functionality of an ACPI device, the device vendor can supply a WDM function driver. For more information, see Operation of an ACPI Device Function Driver.

An ACPI device is specified by a definition block in the system description tables in the ACPI BIOS. A device's definition block specifies, among other things, an operation region, which is a contiguous block of device memory that is used to access device data. Only Acpi.sys modifies the data in an operation region. The device's function driver can read the data in an operation region but must not modify the data. When called, an operation region handler transfers bytes in the operation region to and from the data buffer in Acpi.sys. The combined operation of the function driver and Acpi.sys is device-specific and is defined in the ACPI BIOS by the hardware vendor. In general, the function driver and Acpi.sys access particular areas in an operation region to perform device-specific operations and retrieve information. For more information, see Supporting an Operation Region.

ACPI control methods

ACPI control methods are software objects that declare and define simple operations to query and configure ACPI devices. Control methods are stored in the ACPI BIOS and are encoded in a byte-code format called ACPI Machine Language (AML). The control methods for a device are loaded from the system firmware into the device's ACPI namespace in memory, and interpreted by the Windows ACPI driver, Acpi.sys.

To invoke a control method, the kernel-mode driver for an ACPI device initiates an IRP_MJ_DEVICE_CONTROL request, which is handled by Acpi.sys. For drivers loaded on ACPI-enumerated devices, Acpi.sys always implements the physical device object (PDO) in the driver stack. For more information, see Evaluating ACPI Control Methods.

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ACPI specification

The Advanced Configuration and Power Interface Specification (ACPI 5.0 specification) is available from the Unified Extensible Firmware Interface Forum website.

Revision 5.0 of the ACPI specification introduces a set of features to support low-power, mobile PCs that are based on System on a Chip (SoC) integrated circuits and that implement the connected standby power model. Starting with Windows 8 and later versions, the Windows ACPI driver, Acpi.sys, supports the new features in the ACPI 5.0 specification. For more information, see Windows ACPI design guide for SoC platforms.

ACPI debugging

System integrators and ACPI device driver developers can use the Microsoft AMLI debugger to debug AML code. Because AML is an interpreted language, AML debugging requires special software tools.

For more information about the AMLI debugger, see ACPI Debugging.

Microsoft ACPI source language (ASL) compiler

For information about compiling ACPI Source Language (ASL) into AML, see Microsoft ASL Compiler.

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Version 5.0 of the Microsoft ASL compiler supports features in the ACPI 5.0 specification.

The ASL compiler is distributed with the Windows Driver Kit (WDK).

The ASL compiler (asl.exe) is located in the ToolsarmACPIVerify, Toolsarm64ACPIVerify, Toolsx86ACPIVerify, and Toolsx64ACPIVerify directories of the installed WDK, for example, C:Program Files (x86)Windows Kits10Toolsx86ACPIVerify.

Normally, you will be told that it is of no necessity to update your MSI motherboard drivers. But, the truth is that your MSI motherboard may not boot or not detect GPU, SSD, SATA, etc. In these cases, there is much need for you to download the latest MSI motherboard drivers for Windows 10, 8, 7, Vista, or even XP.

Now, in this post, you will gain the most effective and powerful ways to get the most recent drivers for MSI motherboard, such as MSI n1996 motherboard driver. For better understanding, you will first learn why you need to update this driver and how motherboard function for applications, like your games.

What is a Motherboard and What Does it do for your PC?

In short, the motherboard is a circuit board on your computer, and it is also called system board or mainboard.

Speaking of its functions, the motherboard plays a vital role in enabling the communications between all computer hardware like GPU, RAM and many others. Moreover, it also allows such components like GPU, hard drive, and the graphics card to receive power to run from the power supply. In this way, you can see, motherboard matters for a PC. Especially for games who feel like enjoying high-quality games, it is a must to make sure your MSI motherboard is in good condition with the right driver.

How to Update MSI Motherboard Drivers on Windows 10, 8, 7?

In terms of downloading the latest MSI driver for your motherboard, there are mainly two ways. You can choose the one suitable for your case. So either your MSI Motherboard driver is missing, corrupted or broken, or you simply wish to get it updated, follow up.

Methods:

Method 1: Automatically Update MSI Motherboard Driver

Here is the case: you tried your best online and offline to find the motherboard driver, but to notice the MSI motherboard keeps not booting or not detecting the GPU, SSD, etc. More often than not, it implies you get the wrong driver. It is true that downloading motherboard driver can be troublesome and annoying as you have to ascertain your product model.

On this occasion, it is strongly recommended to ask a professional and reliable driver tool for help. Here Driver Booster, the top one driver updater, can find, download, and install the right or the latest device driver for you automatically, including MSI motherboard driver. You can depend on it as what most users do now.

1. Download, install and run Driver Booster.

2. Click Scan. You can observe that Driver Booster is searching for the missing, corrupted or broken drivers carefully.

3. In the search result, find out MSI Motherboard driver and Update it automatically. You can also choose Update Now to update all the drivers.

Driver Booster is able to locate Windows 10, 8.1, 7, Vista, XP MSI motherboard drivers for you. And then install it automatically. Hence, you will notice that you have installed the latest MSI g45, z87-g45gaming, MSI audio, Ethernet, or 553 motherboard drivers easily and quickly. Start your game to see if it brings improved GPU, RAM performance.

Method 2: Manually Update Drivers for MSI Motherboard

Or, of course, it is also up to you whether to navigate to MSI official site to search, download, and install the MSI motherboard drivers for Windows 10 on your own. For users with computer skills and knowledge, it is worth a shot to install MSI drivers by yourself.

But the challenge lies in that you need to know exactly what your MSI motherboard model is on your computer. Only in this way can you download the right MSI driver for your motherboard.

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1. Go to MSI Support.

2. Find out and hit Motherboard. Here you can see other MSI products like MSI graphics card, MSI desktop, monitor, etc.

3. Search or Find your product. Task MSI Z170 Gaming M3 Motherboard as an example.

If you know what your product model is, you can search it directly, such as ASRock H370M Pro4 Micro ATX Motherboard, MSI Z170A Gaming M5 ATX Motherboard, and MSI Z270 M5 ATX Motherboard.

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4. Click the Download icon to get the driver.

Download

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All the available drivers will come up.

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Install the MSI drivers step by step.

For now, you will have updated MSI gaming, audio, and other motherboard drivers. Nevertheless, most clients may have no clue about the MSI motherboard model, therefore, in a large sense, you would better turn to Method 1 to download the driver automatically and accurately.

In summary, hope you can find the quickest and the most useful way to update MSI motherboard driver for Windows 10, 8, 7, Vista, and XP.

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