LDDM Graphics Subsystem (DXGKrnl) Service Defaults in Windows 7

Controls the underlying video driver stacks to provide fully-featured display capabilities.

Default Settings

Startup type:Manual
Display name:LDDM Graphics Subsystem
Service name:DXGKrnl
Service type:kernel
Error control:ignore
Group:Video Init
Path:%SystemRoot%\System32\drivers\dxgkrnl.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DXGKrnl

Default Behavior

LDDM Graphics Subsystem is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If LDDM Graphics Subsystem fails to load or initialize, Windows 7 startup continues without error messages. The failure details are being written into Event Log.

Restore Default Startup Configuration for LDDM Graphics Subsystem

1. Select your Windows 7 edition and service pack, and then click Download.

2. Save the Win7_DXGKrnl_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The DXGKrnl service is using the dxgkrnl.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.