title: ADB not responding. If you'd like to retry, then please manually kill "adb.exe" and click 'Restart'
body: <p>I am a newbie and want to learn android. However, I face difficulties during installation of android studio.</p>
  
  <p>I have installed android studio correctly but when I want to run a Hello World in my android device, it shows </p>
  
  <blockquote>
    <p>ADB not responding. If you'd like to retry, then please manually kill
    "adb.exe" and click 'Restart'</p>
  </blockquote>
  
  <p>I have searched it from the Internet but it still cannot solve the problem, what can I do to solve it?</p>