I have a MS account which I believe my laptop is already registered to. Because I wish to change hardware in the future, I now need to register my PC to a MS account in case I need to reinstall OS and activate it. Do you have to have a separate account or you log on to your existing one and register a second machine. Can you read what product codes and digital licence (keys) are on there. Is there another way to find what the digital licence is for a newly upgraded PC when it auto activated and the new product ID is different to the previous one I had for W&.