A Windows product key is a 25-character code used to activate Windows. It looks like this: PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it.

To check activation status in Windows 11, select the Start button, and then select Settings > System and then select Activation .. Your activation status will be listed next to Activation.. Check activation status in Settings. You'll see one of these activation status messages on the Activation page:

Some PCs can let Windows automatically adjust screen brightness based on the current lighting conditions. To find out if your PC supports this, select Settings > System > Display.Select Brightness, look for the Change brightness automatically when lighting changes check box, and then select it to use this feature.This automatic setting helps make sure your screen is readable wherever you go.

查找有关 Windows 操作系统的帮助和操作方法文章。 获取对 Windows 的支持，并了解安装、更新、隐私、安全等方面的信息。 使用 Windows 11 让日常任务更加轻松 当有很多任务时，Windows 11 可帮助你完成它们。

Microsoft 支持可帮助你处理 Microsoft 产品的问题。 查找有关 Microsoft Copilot、Microsoft 365、Windows、Surface 等操作方法的文章、视频和培训。 了解 Microsoft Copilot 在每天使用的应用中使用 AI 助手实现可以想象的任何内容。

In quick settings: To find the quick setting for Bluetooth, select the Network, Sound, or Battery icons ( ) next to the time and date on the right side of your taskbar.Select Bluetooth to turn it on. If it's turned on without any Bluetooth devices connected, it might appear as Not connected . If you don't see Bluetooth in quick settings, you might need to add it.

如果不想继续使用 Windows 11 家庭版并想要更改版本，请参阅将家庭 Windows 11版升级到 Windows 11 Pro 。 激活最新的 Windows 11 内部预览版 如果你是 Windows 预览体验成员并且已在运行 Windows 11 Insider Preview 内部版本，你将自动收到已激活的新的内部版本，前提是在升级到新的内部版本之前 Windows 已在设备上 ...

Hardware problems can be caused by outdated or malfunctioning drivers. Make sure your audio driver is up to date and update it if needed. If that doesn't work, try uninstalling the audio driver (it will reinstall automatically).

了解什么是 Microsoft 帐户以及使用它的好处。 Microsoft 帐户的用途是什么？ 你需要一个 Microsoft 帐户才能登录到 Windows 电脑、Xbox 主机或任何 Microsoft 产品和服务，包括 Office、Outlook.com、OneDrive、Xbox Live、Microsoft 365、Family Safety、Skype

Before you begin. Driver updates for Windows, along with many devices, such as network adapters, monitors, printers, and video cards, are automatically downloaded and installed through Windows Update.