Hi,
my mainboard is a DH77KC updated to the latest bios version 0110.
The graphics card is a Saphire HD 7770 1GB (supports UEFI).
I installed Win 8.1 and enabled Secure Boot but now the Display remains black during boot (no Intel logo, can't access bios) then Windows starts without problems.
The monitor is plugged in to the Saphire DVI Port.
If I plug the monitor into the onboard DVI Port, it shows first the error message:
"Video OptionRom authenthicate fail".
Then shows the boot screen but then after booted to Windows it remains black.
If I disable Secure Boot everything works fine: Boot screen/intel logo shows up and then Windows boots. But this causes the watermark on the Windows Desktop that Secure Boot isn't installed properly.
(I can access the bios by either plugging in the monitor to the onboard DVI port or changing the BIOS jumper to configuration setting).
How can I use Secure Boot and also see the Boot screen?
Thanks