Alright so the other day without thinking or researching first I decided to do a factory reset of my nexus s that has been rooted and was loaded with the cyangen 7. After doing this I am no longer able to get out of the boot loader screen and when I connect my phone to my computer I notice I have no files on the phone at all. I am not too sure exactly how to either get the stock os on it or a custom rom on it if this is even possible. Any help would be appreciated.