Hello, I have to start by saying that I am a Mac novice, very experienced in Windows but know next to nothing about Macs. Problem is: recently I was downloading updates to the OS as prompted by Apple and received an error during the download/install process. The system attempted to reboot and now hangs during the reboot process. I initially get a screen with the Mac apple symbol and a small circle at the bottom then after about 30 seconds the screen turns a solid shade of blue and the mouse icon shows up. I tried to restore from my original install disks and when I boot from the install disk, holding the Alt(option) key, I eventually get a screen that has three icons, on the left is a circular arrow, in the center is a hard disk symbol, and on the right is a right arrow. When I press the right arrow it goes to the frozen screen, when I press the other two icons, (disk and circular arrow) nothing happens. Help, any suggestions?