MacBook
I have been locked out of my 2009 Mac book, when I attempted to change the administrator from my son back to myself the computer locked me out.
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Hi Poppopsrmbrt,
What version of OS X is your Mac running? You might be able to reset your password from OS X Recovery:
- Restart your Mac while holding down Command-R. Release the keys when the Apple logo appears with a progress bar.
- When the OS X Utilities window appears, go to the top of the screen (where the menu bar is), select Utilities -> Terminal.
- Type "resetpassword" without the quotes and hit Enter (Return).
- Follow the onscreen instructions to reset your password.
- Restart, then check if your account has administrator permissions: System Preferences -> Users and Groups -> select your account. The box for "Allow user to administer this computer" should be checked.