title: Android Studio Emulators not Working after Updating emulator on 11/13/18
body: <p>I accepted a recommended emulator update in Android Studio about 10 minutes ago (11/13/18, 7:20 AM PST).
  Now the emulator will not boot up.  It starts, but I just get a black screen and it does not boot Android.  This is the case on all of my emulated devices.<br>
  I have done some research such as posted here: <a href="http://stackoverflow.com/q/27864774/1531971">stackoverflow.com/q/27864774/1531971</a> 
  For each case, I either tried them or they are not relevant to my situation.
  All of my emulators were working fine before the emulator update.<br>
  Now it just says "waiting for target device to come online" and it never comes online. There are no error messages.  I'm running Windows 7.  Is anyone else having this problem?  Please help.</p>