My iBook is dead. It does not power up!! No noice, nothing!! It was runing fine last night. It is dead today. The battery test button shows the battery is 75% charged, and it does not charge 100% with the charger, so charger conector to the iBook never goes green. This laptop has run with the same battery for more than 3 years, but it had shown no signs of being weak. I removed the battery assuming it would turn on without it (was I right?), but it didn't. I do not know what to do. Any ideas out there? Thank you!