So I installed Windows on my Macbook quite a while ago so I could play a few games. Yesterday, I rebooted to get on, and it told me I needed to register my copy of Windows. I was like, what the hell? It confused me because I had already registered it. Anyways, I was like "No problem, I'll just authorise it again." Nope. I click on "authorise now" and it takes me to a popup that says "You have already authorised your copy of Windows. Click ok to continue." So I click ok, and what do you know...it takes me back to the login screen, and it's an endless loop. Any idea what the hell is going on here?