电脑维修更换主板后office无法识别，已删除设备

Thanks for getting back to me. Since your Office was pre-installed and you've already tried both the recovery tool and the license transfer option without success, the next step is to get in touch with a Microsoft support agent who can manually reset the license for your current hardware.

You can do this by going to https://support.microsoft.com/contactus, selecting “Microsoft 365 and Office,” then choosing “Technical Support” and “I can’t activate Office.” From there, click “Chat with a support agent” or “Call me back.” When prompted, just let them know that your Office 2024 Home and Student was pre-installed, and after a motherboard replacement and system reinstall, it now says the license is already used.

They’ll be able to verify your account and help transfer the license to your current setup. Let me know once you’ve had a chance to try that, or if you’d like me to walk you through the support form step-by-step.

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嗨，我明白这有点麻烦，尤其是在修复系统之后。让我解释一下发生了什么以及我们如何解决它。

由于您的 Office 2024 家庭和学生许可证与原始硬件绑定，因此更换主板会让 Microsoft 认为这是一台不同的计算机。这就是为什么它阻止激活，它将其视为第二台设备。

若要解决此问题，请首先确保你使用首次激活 Office 时使用的相同 Microsoft 帐户登录。然后尝试从 https://aka.ms/SaRA-OfficeActivation 运行 Microsoft Support and Recovery Assistant。如果这不起作用，请前往 https://support.microsoft.com/contactus，选择 Office，然后请求许可证转让。支持代理可以帮助重置新设置的许可证。

快速检查，您是否仍然有权访问用于原始激活的 Microsoft 帐户？Office 是预装的还是单独购买的？这将帮助我更好地指导您。

这个Office授权是绑定电脑主板的，更换主板后就不能使用了。因为是电脑厂商(联想？)赠送的，所以，也没法转移；如果在质保期内，可以问问电脑厂商是否可以另送一个授权。