I just received my BENQ monitor after a warranty repair....It seems to be working except it creates sound when I change the screen resolution. I can only keep it 1024 by 768 pixels. Anythn higher or lower makes it create some annoying sound.
The LCD monitor I have does that too, but I don't think it's anything bad because I can remember from its earlier beginning that it always do this. Is your monitor digital or analog?