Per the subject; I just updated our m17 R3's BIOS to 1.5 ("urgent" update) and now our RX Vega 64 (used for rendering) is no longer detected.

It won't allow me to roll back the BIOS either, so we're completely stuck.

All we can see however is a PCI Express Upstream Switchport device with the dreaded yellow triangle next to it.

Does anyone have any ideas?