Aurora R3 nor running with HIS R9 280X Boost Clock

Hi to all,

I`m trying to get my R9 280X to run with my old Aurora R3 but it obviously didn't work. Also read close to every single google entry about that. Some seem to have flashed their Bios to make it run but I cant find a version of that modded bios anywhere.

Problem is, as soon as I start the PC, the fans turn on loud, fans on the 280X running normally, but I dont get any output to the Monitor. The system  doesnt even boot to bios. If I press the power button it turns off immadiatly, so its not booting at all. My 280X has a Bios switch but without legacy <> UEFI switch. Both the same bios for overclocking. So I cant change something there.

Is there any possible way to make that run? It wont even take your programmers long to write an A7 bios which enables the use of those cards and win 10. Why do you guys refuse to give a fast update for those R3 owners :(

Would be great if you could help me in any way :)

P.S.: Sry for my bad english...