my old system is hp prebook 4530s ( el capitan public beta 2 and windows 8.1). Then, update from windows 8.1 to windows 10. But, boot only windows 10.
how Efi--boot--microsoft--bootmgfw I will changed ?
I could not solve the the sound problem. Can you help? I can not tell you the method.
Is there an easy way to activate the the sound.
Thank you to everyone. Your effort is too much.
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