Update Nexus 9 to Android 7.1 and stuck in Google screen
Applying "Rescue OTA for my Nexus 9 using Windows 10 on my laptop" works. But one must follow the instructions very carefully, and if need be, download the needed Android software to your laptop. I have to admit it took 3 or so tries but perseverance paid off.  Thank you to whomever posted the 2 page step by step instruction solution.  Needless to say my Nexus 9 was to valuable to me to be left stuck on the Google Logo.