title: Emulator process killed while launching
body: <p>I am using <code>Android Studio</code> 2.2.3</p>
  
  <p>I created a very simple project with the <code>basic activity</code>.</p>
  
  <p>When I run the project then there was this error in the <code>Run</code> tab : <code>Error while waiting for device: The emulator process for AVD Nexus_5X_API_25_x86 was killed.</code></p>
  
  <p>My computer is windows7 64-bit , RAM 4Gb , virtualization is enabled. There is the antivirus Avast running.</p>
  
  <p>So what should I do to prevent this process killing ?</p>