Microsoft Windows Management Interface for ACPI (WmiAcpi) Service Defaults in Windows 7

Windows Management Interface for ACPI by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:Microsoft Windows Management Interface for ACPI
Service name:WmiAcpi
Service type:kernel
Error control:normal
Group:Extended Base
Path:%SystemRoot%\system32\DRIVERS\wmiacpi.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WmiAcpi

Default Behavior

Microsoft Windows Management Interface for ACPI is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Microsoft Windows Management Interface for ACPI fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the WmiAcpi service is not running because of the error.

Restore Default Startup Configuration for Microsoft Windows Management Interface for ACPI

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config WmiAcpi start= demand

3. Close the command window and restart the computer.

The WmiAcpi service is using the wmiacpi.sys file that is located in the %WinDir%\system32\DRIVERS folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 7 installation media.