I've had no problem getting adb to work with my LG G3 and Nexus 7 2, but it won't recognize my Atrix 2 running ICS. I've gotten the latest Motorola drivers, connected in mass storage, media, and camera modes, rebooted my Windows 7 machine with the phone connected/not connected with debugging on/off, even did a factory reset. adb still doesn't see it as an Android device (and neither does Windows 7 Device Manager). Any ideas?
Thanks,
Paul
Please try this Adb driver installer.
Hope this help!