After getting a MSI X470 Gaming Pro with a Ryzen 2700 and a set of G.SKill FlareX 2x8GB (DDR4-3200Mhz CL16), I noticed that it detects 16GB but only 8GB are available.
After some testes I discovered that the problem is in DIMMA1 and DIMMA2, connecting the RAM to DIMMB1 and DIMMB2 it has 16GB available. If I connect 1 or 2 RAMS to only DIMMA the PC doesn't even boot.
I've updated the BIOS to the latest one, but the problem presists.
Could this be a bad motherboard/CPU or issues with the RAM (F4-3200C16D-16GFX)?