DIMM slots not working - Hardware Hub

how do i test for a bad memory slot ? dimm slot not working Method 1: Check for Physical Damage When one RAM slot is not working, the first thought that comes into the inflicted user's mind may be the dimm 2 slot 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

dimm slot meaning RAM SLOT NOT WORKING ,GA-H81M-S 2ND RAM SLOT NOT WORKING PROBLEM