I have an old (maybe, ancient?) Dell Optiplex GX1. This afternoon it
mysteriously began beeping. It beeps with single beeps about every 5
seconds. There is no pattern to the beeps except that it is regular.
I turned the computer off and it continued to beep in the same
manner. I haven't done anything unusual with the computer, so I don't
think it was because of any change I instigated. My initial thought
was that it is a warning about a dying battery, like with a battery
powered home fire alarm. I would appreciate any ideas about this.

Thanks, Al