In some cases, the Technical Support staff will request you to generate a DxDiag file. This file contains detailed information that the staff can use to diagnose and troubleshoot DirectX and video- or sound-related issues.
Generating the DxDiag file
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Go to Start > Run or ⊞ Windows Key + R.
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On the Run prompt, type "dxdiag" then click OK.
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On the DirectX Diagnostic Tool window, click on Save All Information....
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Browse to a folder, type in a filename then click Save.
It's recommended that the folder and filename you choose can easily be remembered and accessible.