I have a 1st Generation Macbook Air, 64GB SSD. We got it off Craigslist for very cheap, but it has some issues. First off, the sound doesn't work at all. Not a big deal, but if repairing it is and option, we will probably do it. So how would be go about repairing it? In the audio settings, no output it shown. Second, the Wifi has some issues. It can detect networks, but won't connect to them. It just sits there trying to connect. I don't know if it's a software problem or not, but I am restoring it right now, so it will probably work after. And third, I wanted to put OSX Lion on it, but I see threads about it not being able to run Lion, and overheating badly. So would Lion be safe to put on? It's a MacBook Air 1,1; Core 2 Duo 1.8GHz;2GB RAM;64GB SSD (I think). Thanks.