installation of Sierra on MacBook - locked system & computer killed hard reboot

MacBook locked during installation of Sierra. Pressed the power button to a hard reboot and now can not initialize get only a message stating your computer restarted because of a problem of waiting to continue to go, but it keeps looping to the same Message and keeps trying to restart.

I put the installation disc in a attempted to hold the c key during the restart and the same thing happens

The installation disk will not help on a Mac running macOS Sierra.

Start your Mac while pressing the command + R keys.

From there, you should be able to use the built in utility to check, repair and restore the OS X disc using OS X Recovery.

Tags: Mac OS & System Software

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