If you changed the multiplier in bios to x46, then that will be it ?
Maybe you should list (or post pics) of all the changes you made, for someone to offer suggestions.
And what cpu cooler are you using.
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.