The past few days, I thought my hard drive was failing. I'd be downstairs and I'd hear a click from over here. My lights would dim for a second when I heard the click too, so I thought maybe I had a bad light bulb too.
Anyway, I turned off my computer and the sound was still there, so I knew it wasn't the CPU. Tonight, I finally sat at my computer and listened. Strangely enough, though my computer is to my right, the sound was to my left.
I heard it once more and looked that way and saw... the iron I plugged in sometime this weekend. I was going to iron a shirt and forgot all about it.
The good news is, the computer is fine! ;)