This is likely to be the case if you've bought multiple new DIMMs and all of them are failing. A CMOS image sensor is differentit's used by digital cameras to convert images into digital data. Some of these BIOS settings include the system time and date, as well as hardware settings. So a motherboard with a maximum RAM capacity of 16GB and four RAM slots can only accept a maximum of 4GB in each slot-trying to put an 8GB DIMM into the slot might cause it to not be detected. CMOS is the term usually used to describe the small amount of memory on a computer motherboard that stores the BIOS settings. This might be as few as two or as many as eight, but most full-sized (ATX) motherboards include four. Your motherboard has a maximum amount of supported RAM, which includes all the slots on the board taken together. But it's possible the RAM DIMM's capacity is higher than the motherboard is rated for. RAM speed should dynamically shift down if it's faster than the slot itself can handle, and timings shouldn't have an impact on the compatibility at all.
That being said, it's rare but possible that RAM might not be compatible with a motherboard, even if it's the right type. RAM DIMM sticks are fairly standard and well-designed: they can only be inserted one way on both desktops and laptops, desktop and laptop RAM isn't interchangeable, and different generations of RAM won't fit in the wrong socket (so a motherboard that only supports DDR4 RAM can't physically fit DDR3). Step Two: Check Your Motherboard's Compatibility
