Browsing Macrumors, went to do something and came back to find it frozen. Shut it down, restart no chime, black screen. Tried a few things, same deal. CAPS lock and NUM lock lights work so I know it's getting power. Last time I had this happen it was exactly the same and the issue was the logicboard. Except that time I was able to boot a few times. Right now, nothing. I'll give it a bit and take a few cracks at it, but if it is dead well…that logicboard had a good run. I got it in 2009 as "on it's last legs". LOL, come to think of it, I got it Dec. 24th, 2009 so four years was pretty good. Looks like I'll be trolling eBay for a new logicboard though. Maybe take the opportunity to find a new top and bottom case. Writing this on my 1.67Ghz 17" PowerBook G4 by the way.