Question mobo will not boot with 2 Ram sticks

May 10, 2019
4
1
10
I apologize, I know there are threads with people looking for help just like me with similar issues. I have read many and still have issues.
I'm actually repairing a buddies build and I am about stumped.
Mobo - msi b250m
CPU i7-7700
Ram- have tried 2 different brands this one is 2x8gm XPG 3000mhz

PC only boots with one stick installed. I have tested both sticks and they both work just fine. one single stick installed, it will boot to Windows just fine. As soon as I install a 2nd stick, no boot. I have tried every possible stick combination (A2, b2, A1, etc etc) no boot. all slots work with a single stick. I tried with xmp on and off, no change.
I'm guessing just oddly bad mobo?

Thanks for your help. This forum has saved me many times before