Run DirectX Diagnostic Tool

DirectX Diagnostic Tool helps you troubleshoot issues with the DirectX suite of multimedia technologies that come with Windows. If you're having trouble getting game animation or a movie to run properly, you should run DirectX Diagnostic Tool to try to find the source of the problem.

To run DirectX Diagnostic Tool

  • Open DirectX Diagnostic Tool by clicking the Start button Picture of the Start button, typing dxdiag in the Search box, and then pressing ENTER.

Using DirectX Diagnostic Tool to diagnose problems

Here are some of the things you should be looking for:

  • Lack of hardware acceleration. Some programs run very slowly or not at all unless Microsoft DirectDraw or Direct3D hardware acceleration is available. Click the Display tab, and then under DirectX Features, check to see whether DirectDraw, Direct3D, or AGP Texture acceleration is marked Not Available. If so, you might consider upgrading your hardware. You might also need to turn on graphics acceleration.

    To turn on graphics acceleration

    1. Open Display Settings by clicking the Start button Picture of the Start button, clicking Control Panel, clicking Appearance and Personalization, clicking Personalization, and then clicking Display Settings.

    2. Click Display Settings, and then click Advanced Settings.

    3. Click the Troubleshoot tab, and then click Change Settings. Administrator permission required If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

    4. Move the Hardware Acceleration slider to Full.

  • Devices are not connected. If a joystick or other input device fails to respond, it may not be properly set up. Make sure the device is present on the Input tab of DirectX Diagnostic Tool. If not, reinstall the game controller or input device by unplugging it and then plugging it back in.

  • Unsigned drivers are present. Microsoft has not tested unsigned drivers for full compatibility with the latest version of DirectX. We recommend that you use drivers that are digitally signed by Microsoft Windows Hardware Quality Labs (WHQL).