Last night updates appeared and of course i said yes to install them. Before the reboot, update OS X 10.4.7 falied and it said it was moved to the trash. Once it tried to boot up, it stay on the screen, "Starting MAC OS X". I was able to get the music CD to eject by holding down the Left Mouse button. I tried to boot from the Tiger CD but can't. I have tried booting from the Panther CD but can't. I tried to start in Safe Mode but it won't. After the chime i held down "C" but nothing hapens, it just goes to "Starting MAC OS X" it does same if I try holding the Shift key. Please any help would be great. Thank you.