I have done the obvious -- the USB driver was installed from the latest Android SDK, and USB debugging was turned on in the tablet.
When the Nexus 7 is connecte
I also have a Nexus 7 and Windows 7 64-bit and got ADB working by stumbling around in this thread and others about a month ago. Then it stopped working. The only thing odd I remember happening before was Windows installing some Bluetooth drivers as I started up (I do not have Bluetooth devices).
I floundered for a day this time. Now it is working again! The last thing I did was to use Device Manager to "disable" the device and reboot.