了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

Learn how to change the power mode on your Windows PC to preserve your battery, limit notifications, and background activity.

Updates to the default screen and sleep settings now help you use energy more efficiently and extend battery life. You can find efficiency settings in Windows 11 at Settings > System > Power & battery.. For a guided walkthrough of how each of the power and battery settings can improve your device's performance, click the button to open the Get Help app:

There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled.

Subscribed. A Subscribed badge means a Microsoft 365 subscription such as Microsoft 365 Family or Personal is already associated with your account and you can access many of your subscription benefits including installing the desktop apps.. Don't already have Microsoft 365, or you're looking for product details and prices? Buy or try Microsoft 365

Learn how Smart charging in Windows can help your battery last longer over time.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

Windows 10 and 11 contain a large set of emojis. To insert one: Put your cursor where you want the emoji.

With Microsoft Edge, you can turn on sync to browse the web on all your devices, keep your favorites organized, and more.

Learn how to turn on device encryption, or standard BitLocker encryption in Windows.