Question Asus Prime B450M-A sees only 8GB of 16GB DRAM

[MDavis-PA]

I've just set up the new mobo with a Ryzen 5 2400G and two 8GB sticks of Corsair Vengeance DDR4 DRAM 3200, in DIMM A2 and B2 as recommended. Everything's fine except that BIOS and everything beyond sees only 8MB. I've swapped them, reseated them very careully several times -- still just 8GB showing.

 

[LTC8K6]

Are you running the latest BIOS?

 

[Sgt. York]

Have you tried one memory stick at a time?

 

[LTC8K6]

Have you tried one memory stick at a time?

Good point.

 

[legolas_tk]

Make sure to set DOCP and if that doens't work, switch to auto and set DRAM to auto to see if 16GB will detect. One of them cause no POST or code 55, it means one of the memory is defective.