Hi, @RandomTechnologyQuestions
Thank you for posting in Microsoft Q&A forum.
According to your description, the error only occurs in the specific Dell model. May be the NIC driver is missing in the WinPE.
We can press F8 to check if we get an IP and to see if we can ping to the network path.
We may get the Dell WinPE driver pack and inject it to the boot image.
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