Please explain SPD Not Detected

Please explain SPD Not Detected ram not detected in slot 2 The RAM might not be in the right slots, not likely with two RAM slots and two RAM sticks The DVD drive might be faulty if there is one I ramses legacy slot If I use both ram in both slots, the computer recognizes it as 16gb but after restarting, it reverts back to 8gb even though they're in dual

ramses book christmas edition slot The main problem would have been a defective RAM slot or defective memory stick itself Pulling it out and sticking it in repeatedly will rather