title: Android emulator shows nothing except black screen and adb devices shows "device offline"
body: <p>I am just trying to start development in Android.
  So, the problem is that when I try to launch an emulator by issuing the command <strong>emulator @A2</strong>, an emulator comes up on the screen. But even after waiting for as long as 2-3 hrs, all it shows is a black screen. Not even the Android home screen or the Android logo. Just a black screen. And while initially &quot;adb devices&quot; shows the emulator as offline.after 2-3 minutes the list of attached devices becomes blank.</p>
  <p>I searched all over net and tried all the steps mentioned there like kill and restart adb, install java/android in a directory without spaces, but to no avail.</p>
  <p>My Jdk and Android installations are in following folders:</p>
  <p>C:\Java32BitInstallation
  C:\AndroidSdkInstallation
  Here's the list of stuff I have downloaded/installed for it:</p>
  <ol>
  <li>Android SDK Tools, revision 13</li>
  <li>Android SDK platforms tools, revision 10</li>
  <li>SDK platform Android 4.0.3, API 15, revsion 1</li>
  <li>Jdk jdk-7u3-windows-i586</li>
  </ol>
  <p>In my <strong>path</strong> variable, I have added *C:\AndroidSdkInstallation\android-sdk\platform-tools;C:\AndroidSdkInstallation\android-sdk\tools;C:\Java32BitInstallation;C:\Java32BitInstallation\bin*</p>
  <p>Also after reading somewhere from net I have added JAVA_HOME variable with its value as C:\Java32BitInstallation\     But still no use.</p>
  <p>I have both IntelliJ and Eclipse installed on my system. But since for starting the emulator, I am not using any of these, I don't suspect any foul play with these.</p>
  <p>I have been trying for past 10-12 days and have not been able to start the emulator, let alone write my first &quot;Hello world&quot; program.</p>
  <p>Additional notes:
  My system is a Windows 7 (64 bit) machine. Earlier I had installed 64 bit version of jdk, but the problem was present that time too. Now after searching on internet, I uninstalled that  and installed 32 bit version of Java. But, again no use. One thing, though, this 32 bit version of Java (jdk 7 update 3), first install jre as part of jdk installation and then installs jre 7. So now I have 2 folders: jre and jre7 in the C:\Java32BitInstallation directory. Could this have to do anything with my emulator not turning up. Do I need to specify additional environment variables or modify the existing one?</p>
  <p>BTW, did I mention the logcat shows nothing.</p>