RAM slots 3 and 4 not working: Faulty motherboard?

Asus R4F only 3 of 4 dimm slots working? ram slot 3 and 4 not working It's not impossible that you had some issue with the contact pads on the CPU , which could mess up one of the memory ramses slot B550M DS3H ; 1 Solid Pin Power Connector ; 2 DVI ; 3 DisplayPort + HDMI ; 4 Realtek GbE LAN ; 5 Ultra Durable PCIe Slot · PCIe® Slot · Running 1*

ramses book slot RAM SLOT NOT WORKING FULL SOLUTION