Yesterday I turned on my MAC and instead of the regular startup, it showed this grey/blue screen with the icon of a 'folder' flashing in it. Inside the folder was a question mark sign (?). I tried reinstalling the software, only to discover the system was not detecting any hard disks to install it on. I've recently married and have among other things, my wedding pictures in there. How deep in trouble am I? Is my MAC dead (if so, I will join her soon in heaven, because my wife's going to get me).