RoasterMen said: View Post
It is somewhat "illegal" to purchase OEM keys.

These keys are so cheap for whatever reason. They're bought in bulk and are to be used by PC manufacturers for laptops and pre-built desktop systems.

Do note that once you have an OEM key activated, you cannot deactivate it and activate it on another system as it is already with your motherboard.
This key came with the lenovo e545 I purchased in 2014(I think). The "Free" win10 upgrade would never complete...allways went to the end and said, "there was a problem" and reboot into win7 pro. Thought what thread was saying was the key could be used if it never been used to update. No buying illegal keys happening.