IMac has black screen/beeps after attempt to update Keyboard - no restart

I attempted to follow the instructions.... got a restart screen with a uploading box.... I accidently stopped holding the ON button down... and now I only have a black screen with beeps... help, please

EllenSears wrote:
I attempted to follow the instructions.... got a restart screen with a uploading box.... I accidently stopped holding the ON button down... and now I only have a black screen with beeps... help, please
Welcome to the Apple boards:
Were you holding down the Power button while the computer was still running? That's wrong and if that's what you did, you aborted the update and forced the machine off.
See if you can reboot in the safe mode - hold down the shift key while booting.
If you have corrupted the keyboard firmware, you may need to take the computer to Apple - I hope that is not the case.
One should never interrupt a firmware update.

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