Well, I received my 6900 XT today but I'm facing some issues. Basically, it won't power on neither macOS or Windows; it seems its well plug in into motherboard and power supply .
I've tried disabling iGPU in BIOS, connecting it to a different slot and nothing. It won't even start spinning the fans. Switching back to the RX 580, and everything works fine. I want to mention that I'm using BIOS 20b, and, when I tried to follow the instructions for configuration BIOS parameters, I never saw this parameter
Settings → IOPorts
- Initial Display Output → PCIe 1 Slot (if GPU in slot 1) or IGFX (if using iGPU to display monitor)
I'd like to know if is there something else I can check in BIOS (PCI distribution, enabling PCI 3 or 4,...)
Also want to add that the card (6900 XT) is brand new so I don't thing is something wrong with it.
Sorry if this is off topic.
THANK YOU.