I recently acquired an Early 2009 white MacBook 5,2. It has a 2.13 GHz Intel Core 2 Duo processor, 4GB RAM, 250gb hard drive. The model with the non-multi touch trackpad and separate mouse button. I spent little to no money on it and got it super cheap on eBay, as I currently have a 2007 Mac Mini as my main computer but needed something portable without spending a huge wad of cash. I do believe it has been restored by the seller on eBay, and I think it might have been water damaged originally [luckily the seller was honest and told me what exactly did and didn't work, and I was fine with it, but he never said what actually happened]. Here's why: 1. MacBook won't boot without power cord plugged in, at all. 2. MacBook won't work without power cord and immediately goes to sleep and then shuts down should the power cord become unplugged. 3. Seller told me not to buy a new battery, as he had tried a new one and it had made no difference, so it's not a problem with the battery itself. 4. The zero key doesn't work, the volume down key doesn't work, and the hyphen/underscore key doesn't work. 5. Light wear and tear on the casing [fine by me!] To me, it sounds like it's most probably a logic board failure of some kind, either through water damage perhaps? Or something else. I know logic boards are the most expensive part of MacBooks to replace, in which case, I probably won't get it repaired. However, if I could somehow get it working again without the power cord so I could use it on the move, that would be a massive help. Does anyone have any ideas of what else could be the problem? I don't have an Apple store in my city [UK] but I'm thinking about taking it to Stormfront to let them have a look over it... unfortunately they charge £50 just to look at it :/ Which is why I'm asking first. Anyway, any guesses to what the problem is and if it might be a relatively cheap fix? Ideally I'd love to get this machine working properly as I *LOVE* the white MacBooks over the MacBook Pro design and although this machine is outdated it still looks good and does everything I need it to: word processing, web browsing, iTunes, iPhoto and Adium. Thanks in advance.