HardwareGuy wrote:
Typically there is a separate program installed by the video card manufacturer on the computer. You might check here, to see if there is a conflict with the Windows Display settings.
Type in" Control Panel" in the bottom left search bar of your desktop, open this, look for a specific program for the video card. Open this, and check these settings.
Hope I made this make sense and it might help. Happened to me once.
Thank you HardwareGuy, that was what was needed. REJ.