Hi there. Yesterday I bought a powerbook g3 in perfect condition with two working(!) batteries and the cd drive and floppy disk and all that jazz. It also came with a belkin wifi pc card as well as a usb pc card. It has Mac OS 8.6 and Mac OS X 10.2.8 on a separate partition. I was super happy and boy is that thing heavy! But then I made a mistake. I pulled the wifi card out of its slot and the powerbook had a kernel panic. No biggie I thought, I'll just have to reset the machine. Mistake number two. I remembered seeing instructions on the rear about resetting the machine when (I assumed) it's unresponsive. After all, apple of all companies would know better than to put instructions to something that can have far-reaching consequences in plain view! so I did Shift+FN+CTRL+Power. The thing reset. And now I have to following symptoms: 1. Batteries are no longer recognized. If I put the powerbook in sleep mode then unplug the ac adapter, the power light will still blink showing that the batteries are functioning (And besides, there's the batteries' LED indicators showing that they still have charge, and I used the machine on the way home in the subway to write things so I know the batteries are alright.) 2. I can't boot back to Mac OS 8.6. No matter shenanigans I try, the machine will still boot into Mac OS X. 3. The screen goes blank when Mac OS X is loading. I then found out that the whole screen shuts off until I press the backlight buttons after OS X has loaded. 4. Whenever I reboot or shut down, the screen goes garbled like you'd see on a broken LCD screen. It's a nasty mess. I did some searching last night and found out the most likely cause was a corrupted PMU. So I searched for a way to reset the PMU on my powerbook and whaddaya know, it's the same key sequence I used to reboot after the kernel panic. Oh. So I can only assume that the PMU got corrupted something fierce when I reset the machine after the kernel panic, but now I have no idea what I could do because no matter how many times I do this, how many times I reset PRAM, the problem is still there. So what else should I try?