Hello users, my ASUS g75v just recently had a hard drive failure and would go to black screen every time I loaded windows. I bought a new hard drive and put it in. Now the problem is finding out how to put windows 7 back on it. It was windows home premium and I have the product key. Is there a way to get windows back on my laptop without having to buy windows? The windows 7 premium came on the laptop when I bought it.