Q:

Cannot start emulated Android device/AVD device in Windows 7

I follow the official Android guide here but I cannot start the emulated device. It keeps saying PANIC Cannot start device... as below screenshot.
Do you have the same problem and any work around for me?
Creating the device

Starting the device

PANIC/failed result

A:

Try these steps

Create a environment variable called: ANDROID_SDK_HOME and set it to C:\Users\<<Administrator>>
Open Eclipse > Window > Preferences, click in Run/Debug and String Substitution. Add a new variable called user.home and set it to C:\Users\<<Administrator>>
Create an AVD and run it.

Note The <<Administrator>> means the name of your Windows account; it is where resides the folder which contains your .android directory
An android project member says here:

As a work-around, you can define the environment variable
  ANDROID_SDK_HOME to point to the directory containing your .android
  directory. The emulator and SDK Manager will pick it up properly.
Also you should check that the AVD is created in the location
  D:\NN\.android\avd (check in your screenshoots, just above the list
  of AVD, the path in List of existin Android Virtual Devices).

