If your hardware provider purchased an operating system for you, loaded, authorised and registered it to you – it’s legal. However, if your hardware provider’s software was loaded on to your machine – it’s illegal. Autodesk software is very specialised and it is unlikely that you would have asked your hardware supplier to purchase and load it onto your PC. Be suspicious if you get a new PC with Autodesk software on it. There’s a good chance that it’s illegal.