So, first post, new Mac user. But I'm a Professionnal PC tech so.. shouldn't be a problem with technical stuff. Just got this Powerbook G4 1.67Ghz 17po 2x512Mb model A1107...... The was no OS in it so I had this folder+? kind of thing showing up. Tried a OS 10.4 disc but did a kernel panic... so I downloaded a 10.5 Leopard disc to try it. In the meantime.... No more display on screen, the Tiger DVD was stuck in the drive.. eject or trackpad button did not worked to get it out. Dismounted the PB to get it out of the drive than remounted all up. Still the same problem though. Cleared the NVRAM, tried safeboot, tried resetting the PMU, tried removing RAM sticks, alternating each other in each slot alone or not. Checked every connection on the board. Tried without the Superdrive plugged in. Tried on another screen. Nothing. So... I hear the chime, the Superdrive spinning, the fans turn normally. No KB backlight, no apple on the lid and no led in the front lit up though... Any ideas?