It seems like this is an odd issue, while I haven’t found the exact issue I might not be alone.

Recently purchased an ASUS ROG Strix B450-i Gaming with a Ryzen 3600X, 16GB RAM and a Sabrent 1TB…

Trouble installing Windows 10 on ASUS ROG Strix B450-i Gaming

Source: [H]ardOCP – Trouble installing Windows 10 on ASUS ROG Strix B450-i Gaming