I am trying to use the m550bd as a display for my windows 10 PC. It's connected to an AMD Rx49ß graphic card with 8GB Ram. As soon as I connect the m550bd my graphic card throws an error 43 which is rather generic and just says that the graphic card reported an error and therefore does not operate. (but it still displays a screen, so something is still working.)
Windows does not recognize that the Acer m550bd is connected and while the picture of my desktop is really crisp and sharp I can't really watch anything or play a game, as everything is terribly slow (probably because the graphic card is not recognized.) I have already updated windows and installed the newest drivers, deinstalled, reinstalled several times, but to no avail. As long as the beamer is not recognized I also can't change the resolution.
The beamer I had beforehand, also an Acer worked without problems and if I connect a different external monitor all problems go away and the graphic card works.
Any idea what the problem is?