It all started with the second display flickering. I thought it would help to change and only use the primary display and then change back, but I was never able to get the second display to work again. It's a Lenovo LT2323p that I first used with a DisplayPort cable, and later changed to a DisplayPort-hdmi adapter. I have tried to roll back, update, and reinstall my GPU (RX480) but it doesn't help. It isn't in the device manager either. And I know there is no problem with the display itself because it works when I connect it to my main displays DVI-cable.
What could be the problem?
What could be the problem?