Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Find your product key to activate Windows. A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

了解如何排查 Windows 中的蓝牙问题。 解决连接蓝牙设备或配件时出现的问题。

Learn about what effect closing a Microsoft account might have on your other apps and services.

Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

Get to know your way around Windows 11, from where to search to how to stay organized. Watch the video and read tips about new features.

Connect your Surface on Windows 10 to a TV, external display, or projector by using the Surface HD Digital AV Adapter or the Surface VGA Adapter.

Use Find my device to locate and lock your lost or stolen Windows devices.

请执行以下任一操作： 在 “翻译为 ”下拉列表中，选择要将页面翻译成的语言。 默认值是为Microsoft Edge设置的语言。

Learn how to extend your PC's battery life using battery saver and other power-saving tips for Windows.