Hi! I bought a brand new PC near Christmas last year, but I’m having some issues with dual Channel Memory . I have an ASUS A320M motherboard, ryzen 5 2600 and 2x8gbd ddr4 2400mH memory. However, from my tests, only one slot dimm is working: both memories work if put individualy on dimm A, however no Memory work when put in dimm B; also my BIOS does not recognize any Memory in dimm B. What should I do? Is the motherboard faulty?