I've just inherited a PB540c this weekend. Plugged in the power adapter (the batteries were long ago drained dry, not surprisingly) was delighted to hear that ever familiar and great Apple boot-up chord. Unfortunatley, I immediatley heard a not-so-familiar higher pitched tone that sounded like a beep and then what sounded like the hard-drive spinning, searching. The screen then lit to standard boot gray, the mouse pointer appeared in the top left corner, already maneuravable with the track pad and then... nothing. No happy mac, sad mac or even a disk with a question mark. Just the pointer, some spinning of what sounded like the hard drive (though I guess it could've been the floppy...) and then even that spinning stopped. I've tried it over and over again to no avail. Once I even picked it up slightly and let it fall a few inches hoping to...well, I don't know what I was hoping to accomplish- what I was trying up to then wasn't working.
Can someone who knows more about these machines help me out? I'm woried that there is no indicators whatsoever from the computer. If it is just the hard drive, can I find a replacement and/or easily replace/repair it? Is this even worth messing around with?