Learn how to connect to a projector or to another PC in Windows using the keyboard shortcut "Windows logo key + P", the Connect app (for Windows 10), or the Wireless Display app (for Windows 11).

本文介绍如何在 Windows 8.1、Windows 8、Windows 7 或 Windows Vista 中使用系统文件检查器工具来解决丢失或损坏的系统文件的问题。

Learn what to do when you see a warning message that your device does not meet Windows 11 minimum system requirements to upgrade.

Learn how to use Wi-Fi 7 and Wi-Fi 6 and WPA3 in Windows for better wireless coverage and network security.

Create a system restore point. Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Training: Watch this video to learn how to switch your Outlook calendar view between day, week, or month views, change the week displayed, and see different shared calendars.

Learn how to troubleshoot Miracast connections and fix problems connecting to a wireless display or dock in Windows.

Windows backup and sync settings sync the settings you choose across all your Windows devices that you've signed in to with your Microsoft account.

Learn how to update and configure your Astro A40 headset and MixAmp to work with Xbox Series X|S consoles

Learn how to control your PC by voice using Windows Speech Recognition commands for dictation, keyboard shortcuts, punctuation, apps, and more.