Question XMP won't overclock RAM to a defualt RAM speed

[turkovic.ante]

First of all hi to everyone,

I just bought new RAM memory today and i don't know what to do next. XMP profil for these memory is 4000mhz cl 18.

When i turn on the XMP PC restart 4-5 times and then boot up with no memory overclock.

SPECS

 

[Eximo]

4000Mhz is ambitious for AMD. Try 3600Mhz with those timings first, then 3800Mhz.

 

[turkovic.ante]

4000Mhz is ambitious for AMD. Try 3600Mhz with those timings first, then 3800Mhz.

First of all thanks for helping but that didn't solve my problem.

The solution was to change memory slot from a1,b1 to a2,b2 and after enableing xmp profile everything works fine on 4000 MHz.

Before i tried this every time i would get black screen(when put more then 3200 MHZ )while PC would turn on and start working but without boot.