I have a Dell laptop. I would like to reinstall Windows 8.1 on it because of the BSODs. It came with Windows 8.1 Single Language. How can I reinstall Windows without losing the genuinity of it? Can I get the original product key from the laptop as well as the Windows 8.1 official Single Language ISO and input the product key during installation or is there some other way?
For 8.x oem systems i always use the Multi_OEM/retail by The_Guardian project, it uses the oemm bios key.
Just download windows 8.1 Single language and install it, it will pull the key from the bios and activate on its own. No messing with anything.