Learn how to update Windows to ensure your device operates smoothly and securely with the latest features.

Learn how to connect a Bluetooth device in Windows and adjust Bluetooth pairing settings.

你可以使用安装介质（U 盘或 DVD）来安装 Windows 的新副本、执行全新安装或重新安装 Windows。 要创建安装介质，请转到软件下载网站，你可以在这里找到分步说明。在该网站上，你可以选择 Windows 版本，并使用 U 盘或 DVD 创建自己的安装介质。

Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

Fresh Start in Windows 10 lets you perform a clean reinstallation and update of Windows while keeping your personal data and most Windows settings intact.

Describes how to obtain the latest version of DirectX to enable games and multimedia applications on your system.

Learn how to uninstall Office from a PC using the Control Panel or with the uninstall support tool.

To adjust power and sleep settings in Windows 11, select Start > Settings > System > Power & battery > Screen and sleep. Screen: Select how long you want your device to wait before turning the screen off when you're not using your device.

Windows 10. To turn off your PC in Windows 10, select the Start button, select the Power button, and then select Shut down.

Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.