Hello,
Thank you for posting in Q&A forum.
Does this problem occur in all newly created VMs? If not, I suggest you use the vhdx file of the VM that cannot be started and recreate a new VM. If so, I suggest you run the following command on the host to see if it can solve the problem:
net localgroup administrators SERVICE /delete
You can refer to the following link:
https://community.spiceworks.com/t/hyper-v-2012-vms-wont-initialize-no-other-error-msg/237975/15
I hope the information above is helpful.
Best regards
Zunhui
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