My mainboard's (Gigabyte B450 Aorus M) CPU status LED is shining red. I am using the AMD Ryzen 7 2700. It should be compatible with the MB. What could be the issue?
It is possible your Crucial RAM MEMORY is not compatible with the motherboard or Processor. I attached your Motherboard's QVL List for RAM MEMORY for Pinnacle Processors. I didn't see any Crucial RAM at 3200 speed listed. But the QVL list is probably out of date and not updated yet.
I would open a Crucial Support ticket and see if your RAM is compatible with Rzyen Pinnacle processors.