A friend was watering her outdoor plants and forgot she'd brought out her Macbook Air and gave it a good watering. When she gave it to me as dead, the light on the power cable wouldn't even come on. I let it sit for a week and tried it and it started charging and booted but said the wireless hardware wasn't installed. Today I was going to take it to the Apple store to maybe get the Airport card replaced. Booted it first and now the Airport card is functioning again. So tomorrow I return it to my friend