Go into BIOS/Advanced DRAM settings.
Set latencies to 16-20-20-38
Command Rate to 1T
DDR Voltage to 1.35V
Set DRAM frequency to 2133mhz, test.
Increase dram frequency and test again after each step.
2400mhz,2600mhz,2800mhz,3000mhz,3200mhz.
At some point it will probably fail.
Then return to previous settings, that worked.