I\'m new to Android development, and am attempting to run a test application on my actual device. I followed the instructions at http://developer.android.com/guide/developin
Assuming the correct driver has been installed successfully (No exclamation mark on the driver icon in device manager), check if the device vendor ID is listed in User\.android\adb_usb.ini.
You device vendor ID can be found at http://developer.android.com/tools/device.html
After adding the new vendor ID, reconnect the device and restart adb
For more details see this thread adb not finding my device / phone (MacOS X)