Orijinal gönderinin sahibi: Andy Orth ,
Is it possible that you damaged the keyboard connector or any other part of the keyboard during install? The power button actually connects to the keyboard which then connects to the logic board, so damaging the keyboard can prevent the power button from working. Which year is it so I can tell you how to power it up without using the power button? One piece of advice that I'm sure you know but I'll mention anyway: MAKE ABSOLUTELY THAT DISCONNECTING THE BATTERY IS THE FIRST THING YOU DO AND NEVER CONNECT OR DISCONNECT ANYTHING ELSE WHILE THE BATTERY IS CONNECTED. Sorry for the caps but it really can't be said strenuously enough with these Macbooks. Most devices you're taking a risk by working on with a connected battery. Macbooks are 100% sure to blow something the first time you do it.