I cannot activated my windows activation , since rollback to Windows 8

J

Jericho_2004

i upgrade my windows 8 to windows 10 ,when the installation is complete , i got problem ,my screen change to black screen when booting, and i decide to rollback to windows 8 ,since i finish rollback my windows, windows activation cannot be activated ,when i enter my product key ,i get error code 0x80070424 and 0x8007007B. HELP ME PLEASE14bf1463-d025-415b-b21b-bbfc82a20ef0?upload=true.png


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