有时，当我们打开eclipse准备运行Android项目时，虚拟机会启动不了，并且会出现下面的报错。
[2015-10-07 16:47:46 - Game2048] ------------------------------
[2015-10-07 16:47:46 - Game2048] Android Launch!
[2015-10-07 16:47:46 - Game2048] The connection to adb is down, and a severe error has occured.
[2015-10-07 16:47:46 - Game2048] You must restart adb and Eclipse.
[2015-10-07 16:47:46 - Game2048] Please ensure that adb is correctly located at 'D:\android-sdk\adt-bundle-windows-x86_64-20140702\sdk\platform-tools\adb.exe' and can be executed.
[2015-10-07 16:48:25 - Game2048] ------------------------------
那怎么解决呢？下面说解决办法：
1.打开任务管理器，将一个名为kadb.exe的进程结束任务。因为这个进程与我们eclipse中的adb相冲突。
2.打开eclipse中的DDMS，点击devices中的reset adb。
3.重新运行我们将要运行的Android项目，就可以发现虚拟机可以启动了