‎DIMM Slots 4 and 2 not working

Only DIMM Slots 1 and 3 work In image they are the two slots on the left with ram installed I can use either of the two or both at the

Any card installed in the second PCIE slot will drop the first PCIE slot to 8x, because both the

dimm slot not working RAM – 16GB DDR5 4800 MHz, Support Up to 32GB 2x SO-DIMM Hard Disk Size – 512GB PCIe NVMe SSD Operating System

dimm2 slot DIMM slots it requires Generally, most computer motherboards are devised to support 2, 4, 6, or 8 DIMMs Smaller motherboards have two slots