So, I shut off the machine with a blank DVD in it. Now when I try to turn it on, it just hangs on the first gray screen you see while the dvd drive continually spins up and then spins down again (you can hear it). How do I get the DVD out? Or is it some other problem? Tried holding the mouse button down, and tried holding option to select the startup disk. No luck. Also tried removing 3rd party RAM....which didn't make a difference either.