Powerbook chimes when turned on, makes some noise, then nothing

So I went to turn on my powerbook and it made the chime noise, I could hear it start to boot up, and then nothing. The screen is blank, and it does not make any noise. However, it is still on, because I have to hold the power button down to shut it off. I really need my computer for school, so any input is appreciated.
Thanks,
Melissa

I have the same problem.
I clicked on Firefox to get it started, moved the attached mouse across the screen to click on an icon, and the screen froze. Tried rebooting using standard options but what would happen was:
the Mac would chime.
I could hear the drive start.
Lights to hubs turn on but not enough juice to turn the light on for the optical mouse.
The keyboard will shut the Mac down.
I have been a Mac user since May, 1984 (still have my 128k)and very seldom have had assistance with problems because I try every option approved.
If I slightly depress the PMU reset button, everything starts up just fine. Can restart. Can switch drives (two external FireWire drives) and full boot will occur.
If I shut down, then restart... back to the chime and nothing else works. t did go into target mode a couple of times - the only "live" action on the keyboard other than the shutdown by the power button.
Someone suggested the PRAM battery (as he called it, the "buffer" battery). After boot, if I don't depress the button all the way, the correct time shows. If I depress it past the "click" point, it will reset to December 1969.
Any help would be appreciated and might solve both issues in this thread.
thanks,
lloyd

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Powerbook chimes when turned on, makes some noise, then nothing

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