My 10yr old HP hard drive finally crashed and burned. (HP 1TB with expandable 24 RAM) It was very expensive top of the line computer 10yrs ago and I wanted to try and get it back up and running for the kids. I was afraid to upgrade with a "new" hard drive so I simply found this refurbished version of my original hard drive and my computer is just as fast as it was brand new! I had to purchase a windows 7 recovery disk to get windows up and running, but the cd was less than ten bucks.