Hoping for some guidance here. running multiple NVIDIA GPU, trying to slap a RX 570 8GB and win10 can't find it. replaced riser, cables and everything, tried putting the NVIDIA card on the riser and works perfect fine. tried putting the RX 570 on the NVIDIA riser which i know works, no luck either.

Can't see it in the device manager, not sure where to go here, hoping someone know what else i can try.