I'm not super knowledgeable on much of this, but I wanted to root my galaxy s3, so i pulled up some tutorials. I followed them pretty well, and successfully completed the first part. But then I got my rom. I don't remember exactly what happened (this took place several hours ago) but there was text on the screen with multiple options. A bunch of the options said No. One said yes and then something, and one option said go back. Thinking I had missed a step, I clicked go back. My phone screen went black immediately and I haven't gotten it to respond in any way ever since. Any advice on how to fix, or what to do would be much appreciated.