Hi folks I am need of a little help, I am trying to boot from Mac OSX.3 cdrom but every time I try and boot from the CD using either the "C" button or selecting it from system prefs I get an error message saying I need to restart my mac by holding down the power button for several seconds or by using the restart button. The whole mac is frozen when this happens. The only thing I have upgraded on my Mac is a new 300Gb Maxtor dimondmax 10 SATA drive and a Nvidia 6800 Ultra card. I seamed to be able to boot from the cd when I installed OSX on my new drive but now it wont. Any ideas?