Problems reloading a MacBook

[quinterro]

I received a MacBook to repair from a customer. Being a used laptop, it had the password from the previous owner still on the unit.

So far I have tried going into single-user mode and booting from DVD to reinstall the operating system. Neither of these options work.

Any ideas?

 

[quinterro]

It's fixed.

I had to reset the Open Firmware password, then go to single-user mode and force a new admin account to be created.

Although they were given a set of Mac OS X 10.4.10 discs for a MacBook they would not install.