I had a similar problem with my own computer, my valid key was not recognized, because Microsoft thought I had installed Windows on more than 5 computers. In fact, currently I have 2 computers, an Mac and a Dell. I agree with Reverend Jim - I called Microsoft, explained the issue, and they allowed me to re-install Windows. They also showed me how to get rid of previous installations on computers I no longer own.
rofa_1 -3 Newbie Poster
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