Another bootloop problem

hey guys today i was rooting my nexus player.
everything was smooth until SuperSU didn not show up.
after restarting my NP i got stock in boot loop.

I tried to use adb to access my device but ran into an issue
when i use: adb devices - it shows me empty list of devices.
i think its because i can not detect it because its not actually boot in the rom it self.

does anyone know how to fix this?

things i tied:
updating drivers
using adb devices
unplugging power cord and pluging back in
using different usb cables

any help would be very appreciated
thank you.