Nexus 9 stuck on boot animation with unlocked bootloader

I unlocked the bootloader and went to root. on the first reboot after rooting it's stuck on the boot animation. When i plug the device into my PC and use the cmd prompt "adb devices" it won't see it. I help the power button and vol down to get to fastboot and my pc still won't see it. i've tried to factory reset though fast boot, says erasing, then reboots and still stuck. I updated everything in adb and still nothing. Everything went fine with unlocking the bootloader, but rooting it totally messed something up.

I can't seem to figure out how to get my PC to see this thing again. It's kind of a crap tablet to begin with, and now i brick it? totally frustrated.

Thanks

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