I received a PowerBook G4 17" from my nephew. It powers on but, nothing comes up on the screen. I tried shining a light, didn't see anything, I tried hooking up an external and it works, just the desktop is extended, and not showing the dock or anything. I figured the inverter was out so I ordered one. Now, the issue is, it appears as though the two little screws at the bottom of the screen (bezel) is stripped. Not sure if someone tried to work on it before or what. Needless to say, I don't really want to try to strip them more. Is there a special tool or am I going t have to do something special to get them out. Anyone else have any experience with this? Help me out a little?