Q: My Macbook pro is frozen during start up. It is saying "panic" "kernel"

I was updating my Macbok pro and while restarting it, it froze on the gray screen with the white apple in the middle with a whole bunch of gumbled mess of letters and words. I can not use it, all it alows me to do is power off and on. But when it powers on, it goes straight to the gray screen again. HELP