I'm Using a l22dvdb20 monitor with a Nvidia Gforce 440 Graphics card on a windows 7 with a hdmi cable. The general screen is fuzzy with a glow around the text . I have updated my graphics card drivers.
It will be the Hdmi cable, have a check see if it is fitted right from the card to the monitor.
If is not that it is likely that it is a cheap Hdmi cable and is not have enough sheild to cut out any interference the power supply the monitor is out putting. another thing that can cause it is having desktop speakers with and amplifier too close to the monitor or hdmi cable. If none of these work for you try another cable of better quality.