Did you use DDU to remove all traces of the nv card drivers/software?
What's with the '5 keyboards', and have you also asked on the asus support forums about the overcurrent message?
My PC- Ryzen 5 5600x, B550 aorus pro ac, Hyper 212 black, 2 x 16gb F4-3600c16dgtzn kit, NM790 2TB, Nitro+RX6900XT, RM850, Win.10 Pro., LC27G55T.