Hello everybody. I was wondering if anybody could help. I have a 15" 1Ghz Powerbook G4 running OS 10.2.x, with something odd happening to the screen. When I turn it on, the Apple logo and spinning clock thing appear on the powerbook's screen just fine, but when it goes into the OSX login screen, the screen goes completely black. I have plugged an external (PC) monitor in, and what happens is that it appears to be using the external monitor as the primary display, completely ignoring the powerbook's screen. Even weirder is that when I go into "display properties", the "application unexpectedly quits"! To be honest I have no idea if this is a hardware or software error (I hope it's software!), as like I say the grey Apple screen appears just fine, OSX is running OK except when it comes to display properties. I have also done that "power reset" thing where you hold down ctrl-alt-shift-power, which has successfully reset the machine to 1969! Tonight I am going to transfer all my files, music etc. to my PC and completely wipe the machine and start again, but if this doesn't work, or if anybody has any better ideas, could you let me know? Cheers!