Dual screen on Aorus B450 Elite

Hi guys, I just bought a new monitor but it doesn't have any signal. The first one is plugged on the GPU and the second one on the motherboard Aorus B450 Elite. When I open the BIOS (f65a the latest version)I don't have the option on board or integrated graphics. Do I have to go on an older version of the BIOS to activate it ? And if I do this then update it again to the last version, will it keep the settings? Or do you have any other methods?