Problem: Asus Nexus 7 not recognized by adb when correctly installed and connected
Setup: Asus Nexus 7 tablet Windows 7 64 bit OS
Steps taken:
That's how I solved this issue with a different device.
Add this:
;MY PHONE
%SingleBootLoaderInterface% = USB_Install, USB\VID_XXXX&PID_YYYY
%CompositeAdbInterface% = USB_Install, USB\VID_XXXX&PID_YYYY&MI_01
Save the file
That worked for me on a Quechua Phone.