rnb

Wondering if anyone has any advice or suggestions on a monitor problem I'm having. The problem is it's "fuzzy," out of focus. I recently lost my ethernet card, which has been replaced. The fuzziness started prior to that but would clear up within minutes of use. It no longer clears up. I've tried the basic adjustments to no avail. When I play a DVD, the computer screen is fine - in focus and sharp. During any desktop or internet use, the screen is fuzzy.