Hi,
How much charge does your battery have left on it?
When my iBook wouldn't start it was due to the plug adapter not working. The computer was running on battery even though it was plugged in and when the battery died the whole computer was dead.
The plugs are troublesome at times. If there was a power spike it could cause the plug to not work. Sometimes leaving it unpluged for a few minutes will make the plug reset itself.
http://docs.info.apple.com/article.html?artnum=58384
You could also try resetting the PMU
http://docs.info.apple.com/article.html?artnum=14449
s.
How much charge does your battery have left on it?
When my iBook wouldn't start it was due to the plug adapter not working. The computer was running on battery even though it was plugged in and when the battery died the whole computer was dead.
The plugs are troublesome at times. If there was a power spike it could cause the plug to not work. Sometimes leaving it unpluged for a few minutes will make the plug reset itself.
http://docs.info.apple.com/article.html?artnum=58384
You could also try resetting the PMU
http://docs.info.apple.com/article.html?artnum=14449
s.