下载和 安装其他语言，以便使用首选语言查看菜单、对话框和其他用户界面项目。 在 Windows 7 中，下载语言的方式有两种： 使用 Windows 更新。 如果你运行的是 Windows 旗舰版或企业版，则可使用 Windows 更新下载可用语言包。 使用 Windows 更新安装 ...

If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page.You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

Important: Office 2007 is no longer supported. Learn how to upgrade to a newer version.If you still need to install this version, you'll need an Office 2007 installation disc and a product key for the version you're trying to install.

Controller serial numbers are 14 characters long and don’t include dashes. Your controller serial number may not be recognized if you’ve never connected your controller, or if you connected for the first time within the last 48 hours.; If you have the Xbox Elite Wireless Controller Series 2, the 14-character serial number is in the lower center on the back of the controller.

蓝牙附件的问题疑难解答 如果你可以打开蓝牙，但在配对或使用蓝牙附件时遇到问题，请尝试以下步骤来修复蓝牙附件会遇到的常见问题。 你还应查看蓝牙设备制造商的网站，尤其是在你的其他蓝牙设备能正常工作的情况下。

Make the everyday easier with Windows 11. When there's a lot to do, Windows 11 helps you get it done. With intuitive navigation and new multitasking tools, it brings you the performance you want and the security you need.

Cloud files can exist locally on the disk or be available online only. To choose the conditions for when inactive files are made online only, under Content will become online-only if not opened for more than: choose your preferred amount of time. Note that starting in Windows 11, version 22H2, the default for OneDrive cloud files is to make files online-only if not opened for more than 30 days.

在任务栏上的搜索框中，键入“管理 BitLocker”，然后从结果列表中选择它。或者，你可以选择“开始” 按钮，然后在“Windows 系统”下选择“控制面板”。 在“控制面板”中选择“系统和安全”，然后在“BitLocker 驱动器加密”下选择“管理 BitLocker”。 注意：仅当设备配备 BitLocker 时才会显示此选项。

기본 화면 및 절전 모드 설정으로 업데이트 이제 에너지를 보다 효율적으로 사용하고 배터리 수명을 연장하는 데 도움이 됩니다. Windows 11 설정 > 시스템 > 전원 & 배터리에서 효율성 설정을 찾을 수 있습니다. 각 전원 및 배터리 설정이 장치의 성능을 향상시킬 수 있는 방법에 대한 단계별 연습을 ...

Learn how to activate Office pre-installed on new Windows 10 PCs or with a new product key.