Bad Update, no more log-in

I've updated to the last update of the MacBook, after the restart did I connect as password entered and then more nothing... the speedometer just go around and around during hours... never ends.

I was able to connect as a guest, which works very well.

I tried record book and nothing, the same

I tried to reset the UMC (or what that call, that you hold the shift + command + Option + Power) and nothing has changed.

I'm out of business here... serious problem...

Help, please.

Thank you

Try a disk repair or reinstallation of Mac OS X in Recovery Mode:

OS X: on OS X Recovery - Apple Support

Tags: Mac OS & System Software

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