UEFI BIOS recognizes but does NOT register DDR4 DRAM

English Hardware
1

Hi
I bought 32 gig of DDR4 ,
Took the existing DRAM out and installed my 32 gig 4x8 gig.

Booted and could see in KsysGuard the 32 gig.

Well today I noticed in Ksysguard that only 16 gig were registered. … Went into BIOS and and noticed that the BIOS recognized 4x 8 gig but only registered for use , so to speak , 16 gig.

I have an ASUS AMD4 motherboard Prime B350-Plus, American-Megatrend BIOS
Operating System: openSUSE Tumbleweed 20190403
KDE Plasma Version: 5.15.3
KDE Frameworks Version: 5.56.0
Qt Version: 5.12.2
Kernel Version: 5.0.5-1-default
OS Type: 64-bit
Processors: 8 × AMD Ryzen 5 1500X Quad-Core Processor
Memory: 15.7 GiB of RAM **<= NOTE

Prtscreen Kinfocenter. Here please note the “total free memory” of 21 gig, the system noticed the 32 gig somehow, but under the header of Physical memory only 16 gig show up.

See Imagebam

http://thumbs2.imagebam.com/be/75/ae/826f141184641474.jpg](http://www.imagebam.com/image/826f141184641474)

http://www.imagebam.com/image/826f141184641474

Photo BIOS

See Imagebam

http://thumbs2.imagebam.com/45/92/51/b2e2541184602924.jpg](http://www.imagebam.com/image/b2e2541184602924)

http://www.imagebam.com/image/b2e2541184602924

Any Idea how to make the BIOS to register the full 32 gig ?

thanks and best regards

**

2

Be sure seated right

Check for bad memory remove and check one at a time. Note some boards may require a min of two sticks check your docs. Swap the sticks around.

Check with ASUS for any secret sauce settings/jumpers

Free memory number may include swap

3

@gogalthorp : thanks for the reply. I took out half the memory out checked the seating of the remaining and booted => 16 GB visible

shutdown placed the additional 16 GB into the slots and made sure they were seated properly and booted = 32 GB visible.

I only can guess that I did not seat the memory correctly to begin with and ???

…but it works now fine. … will see if it remains so

Thanks for your help and cheers