Help!! Purchased the Macbook Air about 3 weeks ago. Today, while daughter was using internet, it made an "errr" noise a bunch of times then stopped. Then "server not responding came up" and she shut the lid. When she reopened it, had a grey screen (with some lines on the screen, there is a blinking line that runs the length of the screen and a line that will move back and forth when I move my finger on the trackpad) and now that's all we can get. Called GeekSquad and they said it may be a corrupted operating system?? Any thoughts and or help would be appreciated. We lived in the middle of nowhere (nearest Best Buy is 3 hours away and Genius Bar is about 7). Thanks, Stacy