检查你的版本. DirectX 是许多 Windows 游戏都需要的一种多媒体技术套件。 如果你的电脑未安装正确版本的 DirectX（产品包装盒上应标有所需的版本），游戏可能无法正常运行。

Learn how to add an app to run automatically at startup. Select the Start button and scroll to find the app you want to run at startup.

Learn how to create a OneDrive backup on your PC. Set up OneDrive PC folder backup to access, manage, stop, or fix problems with PC folder backup.

Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

Learn how to create and add a signature to email messages you send in Outlook.com.

Learn how to use the Gaming Services Repair Tool to troubleshoot installation and update issues with Gaming Services on PC.

Training: Get up and running quickly with our Outlook Quick Start. Learn how to add an email account and get started in Outlook.

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.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

How to create a checklist in Word that can be filled out by using checkbox controls.