HT201541: Update the software on your Mac
Learn about Update the software on your MacQ: I forgot my administrative password and login. I do not have the CD and every time i try to use single user mode it does not work ... I forgot my administrative password and login. I do not have the CD and every time i try to use single user mode it does not work either. Is their anything i can do to reset this? I don't care about losing the information. more
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Helpful answers
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Aug 13, 2012 10:37 PM in response to dyeee.by BDAqua,Hello, is it an admin Login, or possibly a Firmware Protection Password???
Firmware password protection in Mac OS X ...
http://support.apple.com/kb/HT1352
It would block usage of all the startup keys, like C, N, T, D, CMD+s, CMD+Option+p+r, CMD +v, Option, and Shift, as well as booting from anything but the Hard Drive.
Force Removing Password Protection
1) Add or remove DIMMs to change the total amount of RAM in the computer.
2) Then, the PRAM must be reset 3 times. (Command + Option + P + R).