1024 * 768 resolution Why have both sides of the dark side

display does not support this resolution ..
you may be the wide-screen display is.
be forced to stay ..
Under the black side of the interface is placed in the middle ..wallpaper might not be high enough
your desktop right – property – Desktop – location – choose “stretch”
point of application, OK if your display Do not adjust the way!
which every time you change the resolution of all different in their own display, where you adjust, to reach the best results! Ordinary CRT monitors at different resolutions, screen size and shape of the grating will change, which is normal, good resolution and debugging can refresh rate, and then debug menu display panels, so as to achieve full screen and show good results .