I tried to install a ddr3 into a ddr4 slot and tried to boot it

I tried to install a ddr3 into a ddr4 slot and tried to boot it ddr4 slot DDR4-2133 · DDR4-2400 · DDR4-2667 · DDR4-2933 · DDR4-3200 · DDR5 Slot · Onboard WiFi · Slot ATX Connector 24-pin ddr4 slot vs ddr5 Brand New DDR4 260P Laptopnotebook Memory Slot Socket Forward AS0A821-H2SB-7H 24 sold Featured brands

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ddr4 in ddr5 slot Placa Mãe ASRock B660M Phantom Gaming 4, Intel, M-ATX, DDR4, Socket, LGA 1700 - 1 x slot PCIe x16 , supports modo x4*  I install the ddr4 ram it had before and it powers on, fans start, ok lights up, monitor turns on but has no visual and turns down