Learn how to troubleshoot Bluetooth problems in Windows. Resolve issues connecting a Bluetooth device or accessory.

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

检查你的版本 DirectX 是许多 Windows 游戏都需要的一种多媒体技术套件。 如果你的电脑未安装正确版本的 DirectX（产品包装盒上应标有所需的版本），游戏可能无法正常运行。

Update Surface devices and Windows. Download the latest drivers and firmware updates to keep your Surface devices performing their best.

Keeping Bing as your default search engine provides an enhanced search experience in the new Microsoft Edge , including direct links to Windows apps, relevant suggestions from your organization if you’re signed in with a work or school account, and instant answers to questions about Windows.However, you can change the default search engine to any site that uses OpenSearch technology.

更改桌面背景图像. 你可以选择桌面背景并随时更改它。. 选择 “开始 > 设置” > “个性化 > 背景 ”。. 在 “个性化设置背景 ”旁边的列表中，选择“ 图片 ”、“ 纯色 ”、“ 幻灯片放映 ”或“ Windows 聚焦 (”，) 查看来自世界各地的新图像。. 注意: 如果无法 ...

Find out how to back up your apps, files, photos, and preferences on your Windows PC with File History and other tools.

Learn different ways to locate your BitLocker recovery key in Windows, and learn about how BitLocker might have been activated on your system.

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

If you plan to use Teams for work or school in Windows 11, you can connect and collaborate by downloading and installing Microsoft Teams (work or school). This applies if you use either of the following accounts: Work account (usually assigned by an IT admin as a part of an organization with a license to use Teams) School account (as part of a ...