this is an ibook G4 1.2 Ghz with 512 RAM. It has many problems, the most serious of them being: It won't boot from an OS X install CD. If you try, it gets to the grey screen with the black apple, and then the apple shifts about a centimeter to the right and 2 small patches of color appear to the left of the apple. The booting does not continue. I've run every kind of ordinary maintenance with no effect. The HD is, by all indications, not the problem. I have a terrible feeling it's a bad logic board... thoughts? Second, I don't know the master password on this computer. It was given to my mom by her employer (a school) and then her supervisor (who set the password) retired, so my mom does not know it either. I would just reinstall OS X to get around this, but see the above problem. The password hint is "white rabbit" and the password is 7 letters. Any Alice in Wonderland fans here?