Reboot and shutdown does not workf

I've upgraded to el capitan today apparently successful. But on the restart and Shut down everything goes except the "Dock" and the macbook does not stop. I wanted to stop at the Terminal and a key appears in the password and nothing happens. Any help?

If you have a backup already taken,

https://support.Apple.com/en-us/HT201150

Tags: Mac OS & System Software

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