It's a new laptop. No, there's no Windows OS attached on it, because I preferred to buy separetly.

gladly, my old pc was not in windows X. I'm still using windows 7 and refuse windows X for this...

Yes, that's what I'm asking. well, thank you so much. I guess I have to sold this original windows 10, then get my self a windows 7 :(

I have bought a Windows 10 Home edition 64bit. but I realize later, that windows 10 is not compatible with Autodesk. can I use my windows 10 original product key with windows 7 home edition 64bit ?...