Won't boot - question mark appears. part 2!
This is a follow on from
When I turn the powerbook on it chimes and eventually just shows the flashing question mark. The HD has been changed but same result.
It won't boot from the optical drive (holding C down, or not), it just ejects discs after about a minute.
BUT I did get it to boot from an external firewire drive, after getting advice from this forum. But when I ran disc utility (from firewire drive) it couldn't "see" either the internal HD or the optical.
Someone suggested I unplug the optical drive in case it was faulty and somehow it was dragging down the disc buss? Anyway, did this, but no change.
So, in my ignorance I thought it must be a faulty logic board, and I've just managed to replace that (thanks to this site!).
But, I STILL get the same question mark - I'm gutted!
Before I kick this into a recycling bin, has anyone any ideas what I could try next?
Thanks in advance.