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my key doesn't work after I upgrade windows 8 to 8.1 pro

today I tried to upgrade my windows 8 pro to 8.1 pro. the upgrade was completed, but i got a black screen.
it said my key was used on another computer. i do nothing, just upgrade, why this happened?
6 answers Last reply Best Answer
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  1. Best answer
    Call microsoft.
  2. Deuce65 said:
    Call microsoft.


    ^ This.
  3. thanks for your suggestion.
    i called ms, they suggested me to contact the key provider.
    so i emailed to REDACTED - SS . and they helped me reactivate.
    thank you, tomshardware, it is very useful.
  4. I am having a similar problem with my Lenovo Twist, I bought this laptop through Amazon, to whom should I send an email to rectify this issue. Kindly help.
  5. Jayakumarca said:
    I am having a similar problem with my Lenovo Twist, I bought this laptop through Amazon, to whom should I send an email to rectify this issue. Kindly help.


    I would call MS first, and if they can't help, Lenovo.

    And next time start a new thread and you'll get more help!
  6. mi1ez said:
    Jayakumarca said:
    I am having a similar problem with my Lenovo Twist, I bought this laptop through Amazon, to whom should I send an email to rectify this issue. Kindly help.


    I would call MS first, and if they can't help, Lenovo.

    And next time start a new thread and you'll get more help!


    I tried calling both and I am yet to get it resolved. Thanks for your help.
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