3 & 4 Memory RAM Slot Not working

Which RAM Slots Should You Use? ram slot 3 and 4 not working On my system, when the memory was not installed per these instructions, it would either not boot, or it booted but I got memory errors depending ramses slot Hallo, also ich hab das Problem dass wenn ich meine Ram in Dual Channel sprich auf Slot A2 und B2 aufs Mainboard stecke geht der PC nicht an

ram slot 2 not working 4 RAM memory RAM slots connect the random access memory to the motherboard RAM allows the computer to temporarily store files and