I just got a new RX580 nitro+ (special edition) replacing my old HD7850.
I removed old driver with DDU. Restarted correctly with integratedGPU. Then I have installed RX580 but can't get anything on display, even Bios doesn't launch. GPU gets light on and fan turning.
Tried on DVI and HDMI, no display.
MB:AsRock H77M (bios v1.6)
RAM: 8gb ddr3
Thanks for your help !