Question Motherboard doesn't lower the RAM frequency

Sep 21, 2020
So here i have MSI H110M PRO-D motherboard. As stated in specs it supports max 2133mhz.

I have 2133mhz (currently in use) ram stick and new unused 2400mhz. I've seen many people said it should lower the ram freq to mobo limits and run completely fine but for some reason my system doesn't boot up. Fans and lights turn on but it doesn't even turn on the monitor. LED indicators jump from VGA to DRAM continuously or don't turn on at all. I also tried to reset BIOS settings and updating BIOS, but it doesn't help. Solely without working RAM stick 2400 one doesn't work too despite working perfectly on other setups.

Full pc specs:
Mobo: MSI H110M PRO-D
CPU: Intel Pentium G4400 3.3ghz
GPU: nVidia GT1030
RAM: Patriot DDR4 2133mhz

What can i do to make both RAM stick work fine?
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