Same thing is going on for me now. Just reinstalled Windows after a bit of frustration on my 970 EVO Plus, got the latest Windows updates, and I haven't been able to get past "Scanning for drive information."
Samsung support told me over the phone to update my MSI Meg Z390's BIOS, so I did, to no change.
Frustrating, but I have a ticket open with them, and hopefully will hear back soon.