查找 Windows 7 或 Windows 8.1 的产品密钥 卸载或重新安装 Windows 7 或 Windows 8.1 时，通常需要产品密钥。 通常，如果购买的是实物 Windows 拷贝，产品密钥应该在标签上或者在 Windows 随附包装盒中的卡上。

Unlike in previous versions of Windows, you’ll need to use the media creation tool to create an ISO file to install Windows 10. Make sure you have a license to install Windows 10, and then follow these steps:

Learn how to find your Windows product key for activation or when to use a digital license instead.

Tips: While signing in, select Yes at the "Stay signed in?" prompt if you want to go straight to your mailbox next time (not recommended for shared computers). Alternatively, check the "Don't show this again" box and select No to be prompted for your password each time.. If you can't sign in, or have forgotten your username or password, use our sign-in troubleshooter.

In the search box on the taskbar, type device manager, then select Device Manager from the menu.

Microsoft Edge is the browser recommended by Microsoft. Support for Internet Explorer ended on June 15, 2022. If any site you visit needs Internet Explorer 11, you can reload it with Internet Explorer mode in Microsoft Edge.

Select Import > From a USB device, then follow the instructions.You can pick the items you want to import and select where to save them. Allow a few moments for detection and transfer.

サウンドまたはオーディオの問題が発生している場合は、次の推奨事項が役立つ可能性があります。 ヒントは順番に記載されています。最初のヒントから始めて役に立ったかどうかを確認し、役に立っていない場合は次のヒントに進んでください。

If you can't find a file on your computer or you accidently modified or deleted a file, you can restore it from a backup (if you're using Windows backup) or you can try to restore it from a previous version.Previous versions are copies of files and folders that Windows automatically saves as part of a restore point.

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