Ok so, I've managed to get to ADB USB Interface (not ADB USB Composite Interface) in the Device Manager. Went into cmd.prompt and typed adb devices and no serial number came up. typed adb reboot, and it said there was error device not found. On the device manager I am able to see Android Phone, and the usb plugged into my laptop actually charges my nook color, but cannot access adb devices. Someone help?