title: Cannot deploy app to emulator in Android Studio - "unknown avd"
body: <p>I made a simple hello world app which I would like to deploy to an emulator in Android Studio.</p>
  
  <p>This used to work before for exactly the same project (I installed all necessary packages) but this time for some random reason, in the run options when I select "Target: Emulator", under the "prefer Android virtual device" I get the following in red: "Unknown AVD".</p>
  
  <p>I've googled around and the answers vary. The answer that seems to make the most sense is:</p>
  
  <blockquote>
    <p>You have to install all Intel Image Library and Google API for your
    desired API. Go to your SDK Manager and check intel system images is
    installed or not if not then you have to installed it as well install
    Google API Library.</p>
  </blockquote>
  
  <p>However I don't have these "Intel Image libraries" and "Google API" options in SDK manager. Are these shorthand aliases for other names in the options?</p>
  
  <p>Any ideas on how to get the emulator up and running?</p>
  
  <p>A bit of information on my environment:</p>
  
  <ul>
  <li>Android Studio 2.3.3</li>
  <li>Windows 7 Professional 64 Bit</li>
  <li>Gradle Version: 3.3</li>
  <li>Selected SDK Platform Package: Android 7.1.1 (Nougat)/ API Level 25<br>
  Revision 3</li>
  <li>Virtual Device: Nexus 5X API 25</li>
  </ul>