Those purchasing Windows 8 PCs are noticing that the small "Certificate of Authenticity" that is normally home to the product key is missing, and instead a "Genuine Microsoft" label has replaced it.
This seems to be a cause of concern, and is prompting a number of questions.
Rather than using a sticker, PC manufacturers are instead embedding the product key -- associated with a fingerprint of the hardware -- into the BIOS/UEFI firmware on the motherboard. This is part of Microsoft new OEM Activation 3.0 (OA 3.0) mechanism and has been designed to combat piracy and, according to my OEM contacts, makes it easier for OEMs to order new keys from Microsoft, and even return unused keys back to Microsoft.
But what does it mean to the end user?
Read more at source:
Will BIOS-embedded Windows 8 product keys cause reinstall troubles? | ZDNet