Thanks for your help.My Powerbook switched itself off and will not restart.

Hello everybody and thank you for helping me.
Yesterday as I was using iTunes on my PB 17", the machine just stopped working as if it had been powered off. I restarted it and a few hours later it stopped again. I opened it (it was closed, being connected to the external screen) and found that it was extremely hot. It took a long time to cool off, and now, every time I try to restart it, I can hear the fan for a second and then nothing else happens. Does anybody know if it is terminal or curable ? Thank you all.
pb G4 17" and MacBook Mac OS X (10.4.7)

i have a similar problem. my laptop shutdown and when i went to start it back up, the fan kicks on and that's it. the fan runs until i turn the computer off, but that's it, no start up chime or beachball, the logo on the cover doesn't light up, nothing other than the fan and a black/ blank screen. the power lite is green and the battery indicates full charge. i have tried reseting the computer to it's factory setting as described in the user guide, i have tried booting up from the install disc that came with the laptop (holding the c key upon start up) but nothing and now the install disc is in the cd/dvd drive and won't eject. please help, any info would be appreciated
thanks in advance, Gene

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Thanks for your help.My Powerbook switched itself off and will not restart.

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