After multiple attempts to reset the UEFI/BIOS, it seems the issue persists. You may need to return the motherboard for repair. If you're removing the CPU, consider using the 5900x as recommended by @Kilrah.
After multiple attempts to reset the UEFI/BIOS, it seems the issue persists. You may need to return the motherboard for repair. If you're removing the CPU, consider using the 5900x as recommended by @Kilrah.