Hello, I'm new to these forums, and new to Macs in general (no hate, was just brought up on Windows). I received my sister's iBook G4 12-inch from around 2005 I believe. She doesn't really know much about computers, so decided to hand it to me as I've been building and repairing my own for a while now. In my head I have a general idea of how to go about the problem, but I'm toying with myself as to what is most likely. The computer simply won't boot, no response whatsoever. Almost as if the battery was out of power. While pressing the button on the battery itself, nothing shows either, so figured there must be a problem with either the power getting to the battery, or the battery itself. When I plug it into the wall, a green LED shows around the end. So by this I would assume the battery, or DC-input. HOWEVER, the AC adapter itself doesn't look to be in the best condition, as within the small hole in the centre of the connector itself, there is a bendable piece of plastic that can be bent so is sticking out of the plug, or is covering the hole altogether. Which in turn can make it hard to connect it to the computer at times, anyway. So I'm confused, as (correct me if I'm wrong) the green LED is showing, so I assume it's still outputting the power. So I was wondering if anyone here would have any more knowledge as to if the problem is the connector itself, or the battery or something entirely different. NOTE: I have tried resetting the PMU, to no avail. Any help is appreciated, cheers.