Your graphics card supports the native resolution of your display, and I would leave that as it is. A TFT/LCD display always works best and gives the clearest image when it is working at its native resolution. You may like to see if changing any settings in the 'Ease of Access Center' helps. Click on the start orb, type 'Ease of Access Center' into the search box and press enter/return. Click on 'Make the computer easier to see' and try the available settings. You will have to experiment a bit to find a combination of adjustments that suits you.