Default Accidentally deleted everything, Kindle Fire stuck in TWRP

Hi,

I accidentally deleted everything through TWRP. I wanted the kindle fresh for my new ROM, and thought that deleting everything would make for a cleaner install. I was wrong and now all my kindle is good for is TWRP.

When in TWRP, windows doesn't recognize the kindle. Because of this, I cannot mount it. Windows and the kindle fire utility recognizes it as adp when i boot regularly (which is just a black screen) but cannot do anything since it will not enter normal or fast mode.

I don't know what to do, nothing is working. When I restart the kindle it says superuser is not installed, and asks if I would like to install it. I say yes, and it fails. Super user WAS installed before I deleted everything.

Any ideas?