I have followed all of the recommendations I have seen on the forums and still have the same issue.
I have an ASRock H87 Pro4. I use the DVI out to one monitor, and the HDMI out to another. They are both Asus VS228s running 1080p at 60Hz.
I am no longer able to use the HDMI port, only the DVI port works in Windows.
I have tried the following steps to resolve the issue:
- Updated BIOS
- Installed the latest graphics drivers (the second display worked after the installation, didn't work after rebooting)
- Uninstalled the graphics drivers. (the second display worked, but without the driver it ran at 640x480 or 800x600, didn't check)
- Installed the latest graphics drivers (again, the second display worked after the installation, didn't work after rebooting)
The HDMI port works while in the BIOS screens and bootup screen of Windows, but goes black immediately after beginning to load the login screen.
Windows 7 64-bit
Graphics Driver Version: 15.33.8.64.3345