Many tasks for Office products don't require a product key because your Microsoft account takes care of them instead.

Learn how to access the Control Panel in Windows for managing your system settings and programs.

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

Note: If you see the icon next to the On/Off toggle for an app, you can select it to see the registry location that contains the path for the app. Apps installed through Microsoft Store (.MSIX apps) don’t have these icons. If you select the icon for these apps, File Explorer opens and highlights the executable file.

购买新电脑. 如何知道现在是使用新电脑的时候了. 帮助我选择新的Windows 11电脑. 帮助我选择 Microsoft 设计的笔记本电脑 ...

2020 年 1 月 14 日 - Windows 10 移动版（操作系统内部版本 15254.603）的更新 KB4535289; 2019 年 12 月 10 日 - KB4530714（操作系统内部版本 16299.1565） 2019 年 12 月 10 日 - Windows 10 移动版（操作系统内部版本 15254.600）的更新 KB4522812

提示: 如果你使用的是无线显示适配卡，请在较新的电视上连接到 HDMI 端口，然后通过无线方式将电脑与其连接。将无线显示适配器连接到电视后，请转到 Windows 11 电脑上，按 Windows 徽标键 + K 打开投放，然后选择无线显示适配器。

Before you begin. Driver updates for Windows, along with many devices, such as network adapters, monitors, printers, and video cards, are automatically downloaded and installed through Windows Update.

Where can I find my BitLocker recovery key? BitLocker likely ensured that a recovery key was safely backed up prior to activating protection. There are several places that your recovery key may be, depending on the choice that was made when activating BitLocker:

但如果需要测试多个条件，例如我们假设所有条件都需要为 True 或 False (AND)，或只有一个条件需要为 True 或 False (OR)，或者如果想要检查某个条件是否不 (NOT) 符合你的条件，这时该怎么做呢？这三个函数均可以单独使用，但它们更常见于与 IF 函数成对使用。