Hi Kevin,
Welcome to Microsoft Q&A.
What is the Bugcheck code? Please record it when the blue screen appears.
What changes had been made before the issue started? (Patch, hardware, application update and so on. )
Are the problem machines all Win 10? Are they jioned in the same domain?
Try disable the 3rd party anti-virus software on the DC and then restart it.
You can try update the DC system to the latest version.
Best regards,
Molly
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