The Music tab displays your current MIDI settings, and allows you to test the DirectMusic component of DirectX. If the tool detects a problem with your sound settings, a warning message is displayed in the Notes box. Be sure not to lower it too much or you may disable some audio features of your system. You can adjust the slider settings and see if it provides better results in your application. The Hardware Sound Acceleration Level slider is used to correct audio glitches that might be caused by some audio drivers. It will tell you if your audio driver is signed, meaning that it has passed Microsoft's Windows Hardware Quality Labs testing standard. The Sound tab displays your current audio settings and allows you to test DirectSound. The DirectX Diagnostic Tool cannot report memory that is in use at the time that it starts and you may see less memory reported than your video card actually has. It will also display your device's available memory and can tell you if your video driver has passed Microsoft's Windows Hardware Quality Labs testing standard. You can also test DirectDraw and Direct3D from the Display tab which will indicate that the DirectX Graphics runtime files are installed and operating correctly. The Display tab lists your current display settings, and allows you to disable DirectDraw, Direct3D, and AGP Texture Acceleration. It also shows the file names and the version numbers of other files that are used by games that are running under DirectX. The DirectX Files tab shows the file name and the version number for each DirectX file installed on your computer. The System tab shows information about your computer and displays the version of DirectX installed on your computer. Next you will see a new window with various tabs. When you run the tool for the first time you may get a message similar to the one below asking if you want the tool to check to see if your drivers are digitally signed. To run the DirectX Diagnostic Tool click on Start, Run and type in dxdiag and click Ok. You can also test DirectSound on each wave output device, and DirectMusic on each music port. You can test Microsoft DirectDraw and Direct3D on each monitor attached to your system. If you are experiencing problems when running Microsoft DirectX applications, the DirectX Diagnostic Tool can help you find the source of the trouble such as incorrect versions of DirectX components, lack of hardware acceleration, devices that are not connected and unsigned drivers. You can use the diagnostic tool to gather information about your system to use for diagnostic purposes. It enables you to test sound and graphics output and Microsoft DirectPlay service providers. The Microsoft DirectX Diagnostic Tool provides you with information about the DirectX API components and drivers on your system.
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