How to solve issue where Ram Slot don't recognize Ram in laptops

RAM slot a1 and a2 not working dimm slot not working R-DIMM Memory · Zeta R5 · Zeta R5 Neo · r-dimm for Products may not be available in all markets Exact specifications and dimm slot meaning 7 Visually inspect the DIMM slot for physical damage Look for cracked or broken plastic on the slot 8 Dust off the DIMMs, clean the contacts

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