Hello Everyone! I'm new here and also a newbie when it comes to computer. I am having trouble with my Secondary monitor even if the operating system is newly installed and it doesn't display to make it as secondary extension. I use Windows 10 pro. Primary monitor is on VGA and the secondary is DVI but the cpu doesn't detect the DVI port or the monitor. The DVI cable seems working as well i tried it on a same cpu. with the same processor different brand of monitors. The operating system is windows 10 pro as well and it was working. I'm trying it now on Windows 10 pro V1511 but im really having trouble on this version. My processor is A6-6400k APU with radeon HD Graphics 3.89 GHz. Please really need help.