locked out of computer

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Level 1

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locked out of computer

iMac Intel using OSXYosemite version 10.10.3

will not accept my passwords for allowing updates. iCloud password is working. Will not let me turn on alternative administrator (we are 2) Will not accept current administrator's password. If I shut down computer, it will prompt me to use the alternative administrator and accept that. Tried unlocking in "users and groups" but can't get in. No idea what else to do after many hours and days trying. Thanks.

iMac, OS X Yosemite (10.10.3)

Posted on May 28, 2015 2:09 AM

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Answer 1

dominic23

Level 10

83,910 points

May 28, 2015 4:17 AM in response to ChalkWalk

Reset Password

OS X 10.10 Yosemite

Start the computer,then press and hold down command and R keys to start into recovery partition.

When you see the Apple logo, release the keys.

Wait until OS X Utilities window shows up.

Move the mouse pointer to the menubar at the very top of the screen and click "Utilities", then select "Terminal"

from the drop down.

Terminal window will appear.

Type in resetpassword and press enter on the keyboard.

Leave the Terminal window open.

Reset Password Utility window will open with Macintosh HD selected.

Select the user account from the popup menu box under “Select user account”.

Enter a new password.

Reenter the new password for the user.

Enter a hint.

Click the "Save" button.

Click  in the menubar and select Restart.

Log in.

If Keychain dialog box appears, select “Create New Keychain”.

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