My hard drive crashed when I tried to refresh, I installed a new hard-drive after testing the old one that the computer failed on all testing, I used the Lenovo recovery disks because when I bought the computer it was pre-installed and I have no windows 8 disk. I got the computer up and running great, loads and everything, runs quick, however the key was blocked when I tried to download Microsoft updates, I called Microsoft and they told me it was a one use key and when I changed the hard-drive it blocked the key and that I need to contact Lenovo to get issued another key. Funny thing, I call Lenovo, they told me its Microsoft's product and its up to them to unblock my key. I say its like buying a car, if I change the engine, I should still have use of the car. Its still the same "unit" that the key is linked to, I shouldn't have to put out any more money for a key that should be useable. Or should I? That is my question, who is responsible Microsoft or Lenovo or is it my problem?