Newer computer with AMD 5100 Video card driving 3 Asus PA329Q monitors. Using DP Ports and Cables. 3rd monitor has amber led light burning indicating it is powered. 3rd monitor shows up in Windows Display properties. This has been our troubleshooting efforts. (1) updated video drivers, (2) updated monitor drivers, (3) new DP Cables, (4) swapping cables around on video card ports, (5) updated system bios, (6) monitor works ok on another pc, (7) reset monitor to factory.
Is there another video card that would solve this problem?