You can diagnose and resolve DirectX problems using the DirectX Diagnostic Tool and the Multimedia and Games Troubleshooter. The DirectX Diagnostic Tool helps you test the functionality of DirectX, to diagnose problems, and to adjust the level of hardware support used by DirectX, which can be used to avoid issues on some multimedia drives. The DirectX Diagnostic Tool (Dxdiag.exe) is installed with DirectX and can be run by clicking Start, clicking Run, and then typing dxdiag. For information about using the DirectX Diagnostic Tool, click the Help button in the DirectX Diagnostic Tool.
Open the DirectX Diagnostic Tool
The Multimedia and Games Troubleshooter assists you in diagnosing and repairing problems with DirectX drivers and games.
What is DirectX?
Using Device Manager