Can I use the same product key to re-activate windows?

I'm thinking about upgrading my current motherboard, but I know that windows will recognize the hardware change and want to be re-activated. Can I use the same key that I had before?
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More about product key activate windows
  1. Best to call Microsoft but I'm guessing that it wouldn't work. I haven't tried to do the whole old key new computer switcheroo in....about 10 years though so I might be wrong.
  2. Is your Windows OEM or retail? Also, always re-install Windows when changing the motherboard.
  3. Best answer
    If it's a vendor (Dell, HP, etc.) installed version then no, you cannot reuse the key on new hardware. Any other version, as long as it is only installed and activated on one PC you may use the key to reactivate. Microsoft has relaxed the rules (but only with Windows 8) with regard to transferring OEM licenses.
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