I was just given a mac. I'm not sure how old it is. When I initially hooked everything up it seemed to be fine. It prompted me to update the date and time, etc. Since I didn't have time I just walked away. When I came back the screen was dark. Now I can't get the monitor to come on. When I press the button, it lights up for a second or so and fades out. I must also report that I have many children capable of pressing buttons or unhooking things when I'm not looking. I checked all connections and they seem fine. Maybe it's not connected correctly. I'm not familiar with the mini mac adapter stuff. Help?