I just got one of the newest Mac Minis open box. I brought it home and it worked for a few hours. I restarted it and now the only thing that happens is that I get the grey apple logo screen with the spinning disk. I put the Snow Leopard disk in so I could reformat the drive. I go through the process of holding the C button down when it boots and it still only goes to that grey loading screen instead of going to the disk menu like it should be doing. i've tried following the other threads that i have seen, but it looks like the other threads are dealing with older versions of OSX and their processes haven't been working. is there anything else that i could do to get this thing booted up again?