Asrock Fatal1ty Z97 X Killer - black screen

[seakyou]

hey guys,

every time i set the Video OpRAM to legay not using the onboard graphics card i got a black Screen. Can't even get into bios, CSM is enabled. I use the newest BIOS Version. My graphics Card MSI R9 270X 2G Support both, UEFI and LEGACY. Do you think my board is broken?

my System:
Intel i5 4690K
ASRock Fatal1ty Z97X Killer
G.SKill Ares 8GB Kit DDR3 CL10
MSI R9 270X GAMING 2G
Samsung MZ-7TE250BW Serie 840 EVO Basic internal SSD

[ASRock TSD - Davis]

[Ilia Muromec]

re: Asrock Fatal1ty Z97 X Killer - black screen

Hi.

I have this situation too on my z97x killer and h97 performance boards
Only internal graphic on cpu works.
When i plug my R9 270x amd card, same issue. Blank screen.
Same problem with HD78x series back up card.

I find on some forum that amd cards is less compatible with asrock boards.
But my previous board z77 works normally about 3 years.

Solution what i find and working on my boards is that you must update firmware on you r9 280x graphic card to new one on tech forum web page
I use another motherboard msi and i update it there.
After i run only internal cpu graphic, reset bios do default. and put my graphic card.
It starts to working on first run
Some tech guy tell on forum that amd cards has some vbios parameters and this is why the pc doesn't start normally.

try it. and let us know please.

Paul.