Hi, I just bought this mac the person i bought the macbook wrote in the ebay auction. Warning: Before you bid you must know that this computer has a problem with it's power. Whenever you disconnect it from the ac adapter it will turn off. Even with a new battery, i bought the computer would not charge, but if you keep it with the ac adapter hooked on it will function perfectly i wondered if this is for sure a hardware problem. if it is a hardware problem is this happening with many macbook's. what is the probable part that i need to fix this problem, if it is a hardware problem. is it possible the problem is as simple as the battery not connecting as it should? could the parts i need might exist in an older mac? as i don't have the mac yet, its maybe a little silly to ask. as i'm based in Europe and the mac is going to be sent via slow post, i thought that I would get started with the problem now. the last mac i bought had a broken screen, so i bought another mac and was able to change the screen over from that one. changing the mac parts was not as hard as i expected. ecology, means buying everything you can second hand. when you buy new you inherit the burden of the creation of that object. well thats my point of view for now.