I installed new RAM 2 x 1GB, and the laptop did start-up. After running for a few minutes and attempting to open Safari, it crashed and here's what appeared on the screen: System failure cpu:0, CODE 00000004. Does anyone know what this means?
The drive itself is fine. I swapped in to another PBook and it works fine. Also formatted a new drive and put it in the malfunctioning PBook and get same problem, so it's not the drive. No matter what drive is in the laptop, it will not boot up from the Leopard dvd. I can boot up to latest Disk Warrior but halfway through the rebuild it hangs. What happens when trying to boot from Leopard dvd is I get a gray apple logo, then blue screen then a dark gray screen and spinning wheel.
I've pulled the drive and put it in another laptop and it works fine. Also put a known working drive in the laptop and it works fine. So, it seems the drive is okay. The laptop powers on fine now, it just runs very slowly and will not allow a reinstall of the OS, nor any other fix when booted from the drive. what I get then is an apple logo, then a blue screen then a dark gray screen and spinning wheel. I don't know what's wrong now.
Thanks for everyone's helpful comments. It looks like one of the RAM chips was bad and I put the bottom one in the top slot. That got rid of the black restart screen. It still did not start-up correctly, although I do get a "BONG" when pressing the power button. I also heard a clicking coming from possibly the HD so I put in a new one but cannot install the OS as I get a gray screen and a spinning wheel. I suspect the logic board now unless anyone has other ideas.