4k Monitor only uses upper left-hand corner

  • Hi all,

    I don't know exactly what caused this, but my LE/Kodi setup on my basement (4k) television started malfunctioning in that it displays a very nice high resolution image in the upper left hand corner of the television while the rest of the image is black. System info/Video says the screen resolution is 3840x2160@30Hz. And System/Display says the same resolution/refresh with No limit on the GUI size. It was using the whole screen, but I don't quite know what changed it. What should I check to see why this is happening?

    Thanks in advance,

    steve