I got mine to finally fix itself by unplugging, holding the reset button down for like 30 seconds to discharge any residual power, and then -while holding the reset button still- plugging it back in and finally releasing the button after 10 seconds. It went into factory reset after that.
This was not the first time I tried this so just keep at it and maybe it'll work for you too!
elucidator This is the way!
I did all of the other things with resets and finally the fix was the discharging of the power. I noticed during this process that my HDMI cable if wiggled just right would drop the connection. Possibly a short in the unit or something. I work with computers a lot and have saved many laptops and desktops doing this same discharging of power.
