Black Screen after flashing vbios

[superylmz]

I have a MSI GTX 970. I flashed this vbios: https://www.techpowerup.com/vgabios/167405/msi-gtx970-4096-150108
This model is same as my card and i am 100% sure. But after i flashed this vbios via nvflash and rebooted pc i got a black screen. Why did this is happened and is there any solution for this? My processor has an internal GPU.

 

[Youseethis]

Why did this is happen

Sometimes even models with the same name have different boards (minor revisions for example), different memory configurations, different cores, even different outputs.
Do you have the original bios or at least a gpuz screenshot with the old bios?

Edit: Did you use hdmi or display port? Try the hdmi because there is this: https://www.nvidia.com/en-us/drivers/nv-uefi-update-x64/
Also there is this bios with claims that the displayport fix is applied: https://www.techpowerup.com/vgabios/216051/216051 . I wouldn't know if it works because your card is unknown at the moment, plus there are far more knowledgeable people around here.