Hello, I've recently lost my boot drive to faulty wiring. Anyways, I got a new SSD and installed it, and put Windows 8 Pro on it, which I updated to 8.1 Pro. Anyways, the Serial Key for Windows 8.1 Pro that I bought isn't working anymore (presumably since I used it for this computer before my drive failed). So, in short, do I need to buy another serial key for my computer? Thanks!