3rd + 4th RAM slots not working

Greetings The best way to get a better idea on the issue would to be to try each stick of RAM one at a time in each RAM slot, and

3 Advanced Thermal Design Fully Covered MOSFET Heatsinks; 6 mm Mega-Heatpipe; 7 Wmk Thermal Conductivity Pad; Integrated IO Shield 4 not to accept

ramses book golden nights slot In this video, we have elaborately discussed which ram slots 1 3 vs 2 4 and different channel

ramses rising slot Slots 1 and 2 on my MB work fine but if I try 1 and 3 or 2 and 4 then all I get is a blank screen The fans etc are running but nothing is on