same disc install

[Jose_98]

I upgraded my pc with windows 10 and i'm making a pc for my sister. Can I use my old windows 8.1 disk and key for her pc or do I have to get a new product key? If so where can I get a product key(BUY)???

 

[Slashgeek]

You must purchase a new product key for your sister in order to install and activate Windows 10 on her PC. You can get a product key here:

http://www.microsoftstore.com/store/msusa/en_US/pdp/Windows-10-Home/productID.319937100