LDDM Graphics Subsystem (DXGKrnl) Service Defaults in Windows 8

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

The LDDM Graphics Subsystem service is a kernel device driver. In Windows 8 it will not be started until the user starts it. If LDDM Graphics Subsystem fails to load or initialize, Windows 8 startup proceeds. The error details should be added to Event Log without notifying the user.

Restore Default Startup Configuration for LDDM Graphics Subsystem

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_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 corrupted or deleted, you can put it back in there.