Ryzen 5 5600X,MSI B550 only 1 RAM slot working

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

To solve this problem, memory bandwidth must scale with the increase in CPU core count Some users have addressed this issue by overclocking their DDR4 memory

ram slot 13 or 24 As @donm4599x said, some motherboards REQUIRE a stick in DIMM1 to recognize any RAM and pass POST Try your sticks in DIMM1 and DIMM2, then

ram slot 1 and 3 or 2 and 4 On macOS, go to About This Mac > System Report > Memory Troubleshooting Laptop doesn't boot: Double-check the RAM seating No, not in your