3 long beeps at startup

[mslivka01]

My pc makes these loud, long beeps when i turn it on. After that however, i boot into windows normally and i can do anything on the pc. I assume there still is a problem, can anyone tell me what is wrong? My motherboard is MSI Z270 PC MATE

 

[AniChatt]

Here is as per your mobo manual,
1. If 3 long beeps are heard, remove all memory modules and try to install only one memory module in the DIMMA2 slot first and then restart the computer.
2. If 1 long 2 short beeps are heard, remove and reinstall the graphics card and then restart the computer. Test with another known working graphics card.

The ram y r using is in the QVL list? If so then if you have activated any xmp profile or not?

 

[mslivka01]

i have xmp activated

 

[AniChatt]

i have xmp activated

It is more likely that it is not accepting the profile properly. Check if it is the rams rated oc profile or higher. e.g. say it is rated for 3200 xmp and you have applied 3400 xmp.
If not go to advanced timing option and check if major timings are set as per rams spd info.
SPD Info: To check it in the bios many mobo has a build in option inside the bios may be in the tools section. If not there then there are many option to read spd values. Google it to know how.
It may be a case that the mobo is not reading all values correctly while applying the xmp
Is the ram is in the qvl list of the mobo?