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HDAudio.sys load problem:CM_PROB_UNSIGNED_DRIVER under WinPE

I want to add HDAudio.INF into WinPE. I copied the whole folder from Windows\System32\DriverStore and then used DISM to inject to WinPE boot.wim. But after booting to WinPE, running 'pnputil /enum-devices', it shows Problem:CM_PROB_UNSIGNED_DRIVER. But I cannot find driver load in setupapi.dev.log Why is an inbox driver reported as unsigned? How should I inject inbox driver to WinPE?[77426-pnp.log][1][77340-setupapidev.log][2][77466-setupapioffline.log][3] [1]: /answers/storage/attachments/77426-pnp.log [2]: /answers/storage/attachments/77340-setupapidev.log [3]: /answers/storage/attachments/77466-setupapioffline.log

windows-hardwarewindows-hardware-wdkwindows-hardware-code-audio
pnp.log (999 B)
setupapidev.log (13.1 KiB)
setupapioffline.log (409.1 KiB)
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