I am installing a brand new DH77KC desktop board with BIOS 110 that always returns a "Video OptionRom Authenticate Fail" error if UEFI boot is enabled and a Video card is present. As a consequence the additional Video Card is not used and OS boots by using the integrated Intel® HD Graphics.
I've tried with two different GeForce cards (GTS 450 and GTX650 Ti) with no luck. At the moment the only workaround is forcing a legacy boot by disabling UEFI.
How can I fix this issue and re-enable UEFI boot?
Thanks.