title: How to disable Direct3D Acceleration on Windows 7?
body: <p>I have tried to disable 3D acceleration on my machine that operation system is Windows 7. 
  I opened the DirectX Diagnostic Tool but DirectX Features can not be changed: </p>
  
  <p><img src="https://i.stack.imgur.com/aGrbQ.png" alt="enter image description here"></p>
  
  <p>In addition I also tried to change Troubleshoot settings. However, it also can't be changed:</p>
  
  <p><img src="https://i.stack.imgur.com/FfEa0.png" alt="enter image description here"></p>
  
  <p>How can i disable directX featrues?</p>
  
  <p>Note: My directX version is 11.</p>