The solution is to re-install the abd usb_drivers. [
http://forum.androidcentral.com/barn...nd-error.html] then under Device Manager, remove device driver under Android Phone. Restart the computer. Plug Nook Color into usb port. It should re-load the original drives.
I am going to stick with the abd wireless driver. I am Running Windows 7-64 bit. Again, I pass this on so others can benefit from my "mistakes."