Full system spec:
Mobo: MSI b450M PRO-VDH ( it already has AMD RYZEN DESKTOP 2000 READY sticker)
Processor: AMD RYZEN 2600 2nd gen processor.
PSU - Corsair VS 650 Watt
Ram - Corsair DDR4 16GB, 3000 MHz
GPU - Zotac GeForce RTX 2070
HDD- WD (2TB) external
Since Mobo already has AMD 2K sticker so i think it should not be old bios issue.