[SOLVED] When I overclock my 16gb of RAM 8gb disappears

[ArbenA]

When I install 16gb of memory (DDR4) it disables XMP mode on my PC (MSI Gaming m7 board).

So i cant change the RAM speeds on my memory or else it makes 8gb dissappear.

WhenI have only 8gb I can run it at 3000 Mhz over the stock 2133 that Im stuck at.

 

[rgd1101]

exact model of the ram?
are they from a set?

 

[nick_v15]

Disable xmp before you install the 16gb.If this fails just set bios to default-auto.