Downgrade from Win 10, WIndows not genuine

Mercian

Distinguished
Feb 28, 2014
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I upgraded and downgraded to/from Windows 10 in the week. My Win 7 passed all the security checks and all went slow but well. I did not like 10 and downgraded but my Win 7 is no longer registered as genuine. I found my key and tried to activate but it was refused. Now I can't even update to Win 10 again. Can anyone offer any advice? Thank you.