Our church computer is driving a monitor and two projectors. The monitor is driven from the mother board and the projectors from the MAD Radeon HD 7700 video graphics card. Both projectors are detected in the display manager and the AMD Catalyst Center. One projector using a DVI-D cable shows no signal in the HDMI mode. The other projector using a VGA cable shows the signal. The VGA projector works on both of the HDMI ports and miniDP port. The DVI projector does not work on any of the ports. The projectors have worked in the past since we upgraded to Windows 10 but have become progressively worse in starting up at turn-on. I have uninstalled/reinstalled the Intel HD Graphics 4600 driver and the AMD Radeon HD 7700 series driver v15.12.
Dell Inspiron desktop
OS- 64 bit
AMD Radeon HD 7700 video graphics card
Epson Powerlite 1985 projector
Epson EB-W12 Projector