I had a tech call with Crucial and they were able to confirm the compatibility issues with the Crucial DDR5 modules and the Optiplex 7000. They are working with Dell on a resolution, but no ETA they could give me. Just ordered some Kingston instead and we'll see if that works.
Dear Support : I found Optiplex 7000MT Have a Ram Campatibility that cause the system cannot Poweron , when I insert Crucial DDR5-4800 16GB (Micro Chip) , the system can't PowerOn , How can I fix it while using this ram ?
dell optiplex 7000MT DDR5 Ram campatibility