MacBook Air attempting to shutdown after a couple of seconds of inactivity I have a a MacBook Air that works fine except popping up a shutdown dialog if left untouched for a couple of seconds (seems to be a consistent duration around 3 seconds or so). Hitting Cancel or Esc prevents the shutdown.

If I keep fidgeting around with the keyboard or trackpad, there's no shutdown attempt. I can even place something on the Fn key to keep the OS from shutting down.

It seems like some inactivity timeout etc. gone awry.

When taken to the Genius Bar for initial assessment, the guy there said it was probably the power button needing a replacement. But, I don't think this is the case, as the power button is functioning normally: I can still press it to explicitly initiate a sleep/shutdown.

There's a chance this was triggered by water damage. There was a recent water spill incident to which I acted quickly by turning off the machine + turning it upside down + not using it for a long while + keeping it in a box with rice to absorb any leftover humidity. But even if this is a water damage, I can't imagine a damage that manifests itself with this very narrow malfunction of wanting to shutdown on a short period of in activity. Absolutely nothing else seems to be wrong with the machine.

Any pointers? Any things I can try to (a) diagnose the root cause fix or workaround the problem?
I have the same issue with my Macbook Air after a very small amount of coffee hit the keyboard. Apple store wanted to gut for $800+. It was less then a year old and I was dropping another $800 into it. What has worked for me for the last 6 months, I pressed the eject button down and wedged a toothpick to hold it down, than cut off the excess. Everything works perfectly and since I don't use a external drive that key was unused. I also found it was the only key that didn't interfere with other functions. I would love to find a programmer who could write a script that when the key is pressed once it's on and pressed again it's off. That would be the perfect fix without spending hundreds of dollars. Any script writers??? :)