Today when I got home I went to my MacBook Pro and opened the screen. It was blank but as this is normal I tried to wake it and then forced shutdown. Normally when I start it up again the screen will have the login window. Today there was all of the normal noises but for some reason it didn't have an screen image. I was able to enable VoiceOver and enable screen sharing to connect from my other mac, and now I can see the screen of the MacBook Pro from the mac but not on the actual machine. What should I do to get the image back on the real computer. I have reset the pram and the power thing. It is a MacBook Pro3,1 and running Snow Leopard indicating it is up to date when I launch System Update. Any Ideas?