Second ram slot not doesn't work

ram slot 1 and 3   Dan ramses book christmas edition slot

1 DVI-D 2 HDMI 3 USB Gen1 Type-A 4 Realtek® GbE LAN with cFosSpeed □ Memory: 8GB RAM or greater □ USB Ports: 3x USB ports plus 1x USB

This repeats if I have a RAM stick in slots 1 or 2 whereas 3 and 4 both work just fine I tested it with the new pair of 3600mhz RAM sticks so I so my task manager said 1 of 2 ram slots used, when i hover it said slot 1: empty slot 2: 4,0GB, 1600mhz but it show 8gb of ram just fine

lightning link slot machine online RAM slots connect the random access memory to the motherboard RAM allows the computer to temporarily store files and programs that are For systems with 3 memory DIMMs installed, place the largest memory DIMM into DIMM slot 0, place the second largest DIMM in DIMM slot 1, and