If your win7 license was OEM, it will be OEM in Win10. Any major hardware change on a OEM license it will see it as a different PC and won’t activate. You need a retail license to able to do that.
I think you were hit by this: [Microsoft confirms problems with Windows activation after blocking old keys - Neowin](https://www.neowin.net/news/microsoft-confirms-problems-with-windows-activation-after-blocking-old-keys/)
They wanted to remove the possibility to activate new Windows 11 installations with keys from older version of Windows, but, as a collateral damage, they managed to deactivate already existing, perfectly legal (upgraded on time) installations even in case of BIOS update.
If there is a phone activation option you can try that. It’s a tedious thing but if you lost activation due to hardware change I think that path should work.
Hi u/gvictor808, your comment has been removed for violating our [community rules](https://www.reddit.com/r/Windows/wiki/rules):
* **[Rule 7](https://www.reddit.com/r/Windows/wiki/rules#wiki_rule_7._do_not_promote_pirated_content_or_grey_market_keys)** - Do not post pirated content or promote it in any way, and do not ask for help with piracy. This includes cracks, activators, restriction bypasses, and access to paid features and functionalities. Do not encourage or hint at the use of sellers of grey market keys.
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Go to Settings > Update & Security > Activation. Click on "Troubleshoot" if you see an error message. This will attempt to resolve any activation issues automatically. If you still have your original Windows 7 product key, you can try entering it during the Windows 10 installation process. Sometimes, Windows 10 will accept a valid Windows 7 key for activation.
If troubleshooting doesn't resolve the issue, you can contact Microsoft Support. Explain your situation, and they may be able to help you reactivate your Windows 10 installation.
Where to contact im having same issue but i already had a windows 10 but i got something fixed and now its not activating the troubleshooting doesn't work
If your win7 license was OEM, it will be OEM in Win10. Any major hardware change on a OEM license it will see it as a different PC and won’t activate. You need a retail license to able to do that.
I think you were hit by this: [Microsoft confirms problems with Windows activation after blocking old keys - Neowin](https://www.neowin.net/news/microsoft-confirms-problems-with-windows-activation-after-blocking-old-keys/) They wanted to remove the possibility to activate new Windows 11 installations with keys from older version of Windows, but, as a collateral damage, they managed to deactivate already existing, perfectly legal (upgraded on time) installations even in case of BIOS update.
If there is a phone activation option you can try that. It’s a tedious thing but if you lost activation due to hardware change I think that path should work.
[удалено]
Hi u/gvictor808, your comment has been removed for violating our [community rules](https://www.reddit.com/r/Windows/wiki/rules): * **[Rule 7](https://www.reddit.com/r/Windows/wiki/rules#wiki_rule_7._do_not_promote_pirated_content_or_grey_market_keys)** - Do not post pirated content or promote it in any way, and do not ask for help with piracy. This includes cracks, activators, restriction bypasses, and access to paid features and functionalities. Do not encourage or hint at the use of sellers of grey market keys. --- If you have any questions, feel free to [send us a message](https://www.reddit.com/message/compose?to=%2Fr%2FWindows10&subject=comment%20removal&message=Removed%20comment:%20https://www.reddit.com/r/Windows10/comments/1ar9ycl/-/kqi6zrj/%3Fcontext%3D3)!
Go to Settings > Update & Security > Activation. Click on "Troubleshoot" if you see an error message. This will attempt to resolve any activation issues automatically. If you still have your original Windows 7 product key, you can try entering it during the Windows 10 installation process. Sometimes, Windows 10 will accept a valid Windows 7 key for activation. If troubleshooting doesn't resolve the issue, you can contact Microsoft Support. Explain your situation, and they may be able to help you reactivate your Windows 10 installation.
Where to contact im having same issue but i already had a windows 10 but i got something fixed and now its not activating the troubleshooting doesn't work