Alright, so i am fixing this Macbook, have no root access, and fortunately I do not need to access old profile files, which is actually the only down side to this method. I have my unix background but never really had a lot of practice on Mac books, so here is my first.
The official Apple method, requires a CD and can be viewed here
You need to enter terminal and create a new admin account:
1. Reboot
2. Hold apple key + s key down after you hear the chime. (command + s on newer Macs)
3. When you get text prompt enter in these terminal commands to create a brand new admin account (hitting return after each line):
mount -uw /
rm /var/db/.AppleSetupDone
shutdown -h now
4. After rebooting you should have a brand new admin account. When you login as the new admin you can simply delete the old one and your good to go again!








