Learn how to open and run DxDiag.exe on Windows to collect device information and troubleshoot DirectX sound and video issues.

Learn how to use the On-Screen Keyboard (OSK) instead of a physical keyboard to type and enter text on your PC.

Configure cameras In Camera settings, you can set default settings for each camera. The settings are stored for each camera and each user account—they don't synchronize between multiple Windows devices.

Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista.

Find out how to install the latest driver for your printer. If you recently upgraded Windows, your printer driver might need to be reinstalled.

Find out how to submit a request for a refund for a purchase of digital Xbox content.

如何将 IF 函数 (与 Excel 中) AND、OR 和 NOT 函数结合使用，以在给定值之间进行逻辑比较。

The new Bing is now available to everybody directly from the Windows taskbar, making more ways to interact with your PC across search, answers, chat, and creation available anytime, right on your desktop.

Learn how to shut down, sleep, or hibernate your PC. When you’re ready to make your PC sleep, just press the power button on your desktop, tablet, or laptop, or close your laptop’s lid.

Your Phone is now Microsoft Phone Link! Learn more about our recent name change for our PC and Android mobile apps.