I'm long-term Linux user. Now I have to install Windows 8 on my laptop which never ever ran Windows before. (Well it came with windows preinstalled but I didn't use it at all).
I don't have any kind of license key or anything, I suppose I either removed the sticker with it either it didn't come with sticker in first place. Laptop is Asus N750jv, and it came shipped with 8.1Pro I think, not sure tho.
What do I do to be able to legally install the Windows?
Windows 8 OEM licences are built into the UEFI firmware, so there's no key sticker in many cases (If there is, they hide it, check under the battery). Just do a clean install of windows 8 from media of the appropriate version (see the answer that was selected as correct here).
Then you can upgrade that, as per normal to windows 10.
This would be a lot more painless, and you'd know exactly what to do if you'd had a recovery disk made (which is what I typically do with systems with windows preinstalled, even if I intend to run something else on it.)
