About 30 minutes ago, a loud alarm-like sound started coming from the computer, and it scared the living daylights out of me, because I had never heard anything like it coming from a computer. At first, I thought it was coming from something inside the wall, so I called University Maintenance. A guy came here and the first thing he did was put his ear up to the computer. I had done that before I called, but it didn't sound like it was coming from there. Well, I turned the computer off, and the alarm-like sound went away. I recorded a bit of the sound, but it's in the background (still pretty audible, though) since I was recording more against the wall than the computer. http://www.users.muohio.edu/choongty/alarm.wav If you could please help and tell me what might've emitted this alarm, I would be most grateful. I started the computer back up again and the sound didn't go back on, but I'll be turning my computer off when I go to sleep. Again, any help would be most appreciated. Thank you!