Thanks for your reply.
Since the current situation is a bit complicated, the following methods are provided for troubleshooting, please refer:
1) Check if there is any problem with task sequence
Deploy the task sequence to a brand new machine.
2) Confirm whether the settings of the boot images have an impact
We can add a boot image from ADK, and let it in default settings. Then, use this boot image to create a new task sequence with default settings and deploy it with the PXE available.
3) Import the computer into Configuration Manager and add the device to a new collection. After that, we can deploy the task sequence to this collection.
You can refer to this article to import the computer: https://deploymentmonkey365.wordpress.com/2016/02/28/sccm-2012-r2-how-to-import-one-or-multiple-computers-at-once/
Note: This is not from MS, just for your reference.
What's more, could you please provide the version of your ADK?
Thanks for your time.
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