after factory reset, when it prompts the setup page, turn it off, turn it back on, no issue. then after you go all the way in setup, then when it finishes setup, turn it off, now I can not turn it back on again on 1 press. I have to try multiple times to power on the nexus after setup.
on related note, I went to local store and try their demo unit and their demo does the same thing as well. since I do not factory reset the demo unit, I turn it off, then I can no longer turn it on. I called the demo people and he too can not turn it on. He thought the demo unit is broken, but of course it was not, because it was on when I played it, then I turned it off. it can not be turn on ever since.