Microsoft System Management BIOS Driver (mssmbios) Service Defaults in Windows 7

System Management BIOS Driver by Microsoft Corporation.

Default Settings

Startup type:System
Display name:Microsoft System Management BIOS Driver
Service name:mssmbios
Service type:kernel
Error control:normal
Path:%SystemRoot%\system32\DRIVERS\mssmbios.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mssmbios

Default Behavior

Microsoft System Management BIOS Driver is a kernel device driver. In Windows 7 it is being loaded at Kernel initialization. If Microsoft System Management BIOS Driver 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 mssmbios service is not running because of the error.

Restore Default Startup Configuration of Microsoft System Management BIOS Driver

1. Run the Command Prompt as an administrator.

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

sc config mssmbios start= system
sc start mssmbios

3. Close the command window and restart the computer.

The mssmbios service is using the mssmbios.sys file that is located in the C:\Windows\system32\DRIVERS directory. If the file is removed or corrupted, read this article to restore its original version from Windows 7 installation media.