Upgrade Windows 8 to Windows 8.1 with an OEM Product Key on the BIOS

[Guest Pmdscr1970]

Recently I had a problem with my system and needed to do a system Recovery, which re-instals the Windows 8 (Core) OEM. Now, after contacting Microsoft support I've managed to make a Boot USB disk (which I did after several diferent attempts, since any were being recognized as bootable disks by this Samsung machine, until I've decided to use the same machine to produce the Boot USB disk using GPT format for UEFI boot) with Windows 8.1 ISO.

 

 

When I press Instal now, after a few seconds the installation program asks for the product key...typed the one that current Windows 8 is activated with and gives an error....Product Key not valid...please input another one and try again!...so..without a valid Installation Product Key I can't overcome this Product Key request!...what should I do? Samsung doesn't give me any support since the machine as by a long time not under guarantee, Windows 8 is not being supported by microsoft anymore, so automatic updates through Windows Update to 8.1 aren't possible anymore...so I wonder...what should I do to install Windows 8.1 on this machine?

 

 

Moved from: [PT-BR]

 

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