I found where it says that text on my mobo, but it's obviously filled with lots of little electronic parts, and there is no arrow, or anything that looks overtly like a switch to me. Edit: Found a pic online. I pressed the button, while the computer was shut down but plugged in. It did seem to depress VERY slightly - how much pressure do I need to apply? I've heard I should see a light flash; I saw no such thing. Help?