I have a Proview 19" monitor that was working fine for me for a while. then i decided to give it to a friend. when i set it up at his house, the colors seems washed out. they aren't as vivid as before. is this a faulty monitor or was it damaged somehow during the moving? can this be a video card problem or dirty electricity? he used to have a 15" monitor that worked fine and the colors were great.