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如何安装最新版本的 DirectX - Microsoft 支持
本文介绍如何获取最新版本的 DirectX 以启用系统上的游戏和多媒体应用程序。
Change the power mode for your Windows PC - Microsoft Support
Learn how to change the power mode on your Windows PC to preserve your battery, limit notifications, and background activity.
Phone Link help & learning
Find help and support content for Microsoft Phone Link. Learn time-saving tips and explore how you can use Phone Link to stay productive.
Recover lost files on Windows 10 - Microsoft Support
Learn how to restore files that have been permanently deleted and are no longer in the recycle bin on Windows 10.
Install the latest updates for Windows - Microsoft Support
Learn about Windows service packs and download the latest updates for Windows 10 and Windows 8.1
Change your keyboard layout - Microsoft Support
Learn how to customize your keyboard for a specific language or format to control which characters appear on the screen when you press the keys.
LOOKUP function - Microsoft Support
How to use the LOOKUP function in Excel to search in a single row or column and find a value from the same position in a second row or column.
Applies To: Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
Send feedback to Microsoft with the Feedback Hub app
Learn how to use Feedback Hub to report problems or send suggestions to Microsoft.
Connect to a VPN in Windows - Microsoft Support
Learn how to create and use a VPN connection profile on Windows for secure and private internet access.
Product activation for Windows – online & support telephone numbers
Learn how to activate Windows using an internet connection, automated system, or live support advocate.