Hi,
It could be a driver issue. Try booting into safe mode. Open Device Manager and search for hidden devices by clicking "Show hidden devices" checkbox. Remove all greyed out devices. Install integration services.
You can try using StarWind V2V Converter as an alternative to do a P2V conversion directly to Hyper-V as a VM.
https://www.starwindsoftware.com/v2v-help/PhysicalDisksandP2VScenario.html
Cheers,
Alex Bykovskyi
StarWind Software
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