"Your computer is disabled" message after installing Yosemite
I installed Yosemite on my 2010 MacBook Pro. After it installed It restarted. Now when the computer is loading it stops and takes me to a screen that says my computer is disabled and to try again in 60 minutes. Then it does the same thing.
After the chime I tried holding down the option button but nothing happens so I can not bring up the boot up manager thing.
What can I do?
MacBook Pro, OS X Yosemite (10.10)