x58 motherboard 3 dim slots not functioning faulty ram or board?

Is Memory Speed Affected by Multiple DIMM Slot Population dim slot Download this stock image: Installing memory module in DIMM slot on modern PC computer motherboard dimm slot not working On the server board, each DIMM slot is labeled by CPU #, memory channel, and slot # such as CPU1_DIMM_A2 and CPU2_DIMM_A2 • Memory slots supported by

dimension a slot DIMM physical id: 3 slot: ChannelB-DIMM1 Here in my system I have 4 memory slots in which currently I am using only one slot In