Hello! I have a problem with my second monitor, it is a TV screen. The signal between the PC and TV was working great this morning, but then i changed to only show at my computer screen, and then back to duplicate the screen. But when I did, the TV-screen went crazy. Now the picture is shown, but it's shaking and has really strange color combinations. And the top left corner is shown in the lower right corner of the screen. I have also tried to connect a second computer, but it gets the same problem. Thankful for help!