Hi, I was getting an intermittent high pitch hum from my PC as though something decided to kick in (fan?) with more revs. After replacing my 17 inch monitor (burnt out) with a new 19 inch widescreen, I now get the noise continually, and the text appears to be a lighter colour. Any clues anyone? I was thinking it's the video card with fan attached as maybe the video card can't support the bigger monitor, and cause the text to lighten.