Will some MoBo's not allow a PC to boot if the Stock Cooler isn't properly seated?

Solution
Starting a PC with the heatsink not attached properly can damage the CPU in a matter of seconds. You may receive an error message if the CPU fan is not connected.

slyverine

Reputable
Mar 4, 2016
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This. The pc will stack in boot screen indicating that a cpu fan is missing and won't let you go on.