[SOLVED] Why is windows hardware reserving 8gb of ram

[djkato]

Hello, I have a difficult problem with my RAM.

My PC specifications:

• MSI B350 PC MATE
• AMD RYZEN 1500x
• Nvidia GTX 1070
• 600W PSU 80+ Silver
• ADATA Premier 8 GB DDR4 2666 MHz CL19 + a similliar one, from adata too, just cant find the model

I tried:

• Reseating
• switching DIMM slots
• Putting them into other two empty DIMM slots
• playing around in BIOS
• updating BIOS
• Running them one at a time, both worked if solo and showed up correctly
• dusting them off
• dusting off the slots
• regedit (dont remember what, though I followed a tutorial. Had 0 effect)

Windows 10 is showing that both of my 2x8GB is installed, yet only 8 GB is usable.

CPUZ also says that I have 16 GB

Even Bios shows, that both DIMMs are installed but only one is active?

Im really lost and confused.

 

[Calvin7]

Memory modules sold as Singles have no guarantee to work in any configuration other than as a Single module. You are free to test memory that has never been tested together before for compatibility with no guarantees.

 

[djkato]

Memory modules sold as Singles have no guarantee to work in any configuration other than as a Single module. You are free to test memory that has never been tested together before for compatibility with no guarantees.

The mystery is that I had this working for more than a year nonstop. They showed up and acted completely as they should. I did have this problem once before but reseating them fixed it. Just suddenly today I checked and saw this issue.

 

[djkato]

Well, apparently reseating them dozens of times did the trick? Thats the way I solved it last time too.
I seated the ADATA 8GX8 8GB DDR4 2400 Mhz 17 cl first, then ADATA 8GX8 8GB DDR4 2666 Mhz 19 cl after a reboot and bam. working now.