Make sure your monitor is set to a Widescreen format (resolution). Try 1280 x 720, (or any of 1366 x 768, 1440 x 900, 1680 x 1050, 1920 x 1200 and 1920 x 1080) -- which ever your LCD supports.
To change your resolution, right click the desktop, properties, then click settings; Choose your...