Find your Windows product key - Microsoft Support
Generally, if you bought a physical copy of Windows, the product key should be on a label or card inside the box that Windows came in. If Windows came preinstalled on your PC, the product key should appear on a sticker on your device. If you’ve lost or can’t find the product key, contact the manufacturer. To ensure your product key is ...
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Microsoft 帐户仪表板
打开或关闭 Windows 安全中心 - Microsoft 支持
打开或关闭 Windows 安全中心. Security Windows 10. 当在新设备中首次启动 Windows 10 时，设备上已安装的防病毒保护程序即是你的默认安全应用。. 但是，Windows 安全中心已预安装并可随时使用。. 如果你想要使用 Windows 安全中心，可卸载其他所有防病毒程序，Windows 安全 ...
Windows sign-in options and account protection - Microsoft Support
To turn on Windows Hello. Go to Start > Settings > Accounts > Sign-in options. Select the Windows Hello method that you want to set up, Select Set up. If you don't see Windows Hello in Sign-in options, then it may not be available for your device. Windows Hello does require a compatible camera or fingerprint reader.
Change screen brightness in Windows - Microsoft Support
If you don't have a desktop PC and the slider doesn't appear or work, try updating the display driver. Select Search on the taskbar, type Device Manager, and then select Device Manager from the list of results.In Device Manager, select Display adapters, then select the display adapter.Press and hold (or right-click) the display adapter name, then select Update driver and follow the instructions.
브라우저 홈 페이지 변경 - Microsoft 지원
Safari. Safari를 열고 Safari > 기본 설정 을 선택한 다음 일반 을 선택합니다. 홈 페이지 필드에 웹 페이지 주소를 입력합니다. 현재 보고 있는 웹 페이지를 사용하려면 현재 페이지로 설정 을 선택합니다. 홈 페이지가 표시되는 경우를 선택합니다. 홈 페이지를 ...
Using IF with AND, OR, and NOT functions in Excel
Using AND, OR and NOT with Conditional Formatting in Excel. In Excel, you can also use AND, OR and NOT to set Conditional Formatting criteria with the formula option. When you do this you can omit the IF function and use AND, OR and NOT on their own. In Excel, from the Home tab, click Conditional Formatting > New Rule.
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Microsoft 365 专属 Excel, Microsoft 365 Mac 版专属 Excel, Excel 网页版, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Web App, Excel for Windows Phone 10
Windows 10 更新助手 - Microsoft 支持
Windows 10 更新助手. Windows 10. Windows 10更新助手在您的设备上下载并安装功能更新。. 功能更新，例如 Windows 10 版本 1909（又称作 Windows 10 2019 年 11 月更新）提供新功能，并帮助保持系统安全。. 下载更新助手 后，你将自动获得这些更新。. 如果不想等待自动更新 ...
了解 Windows 上的 Game Bar | Xbox Support
将最喜爱的内容固定到一个位置. 打开 Xbox Game Bar，各种游戏活动尽在掌控中。. 从小组件菜单中选择一项功能，它将作为小组件弹出。. 其中很多叠加项可以移动、调整大小或固定到你的屏幕。. 小组件菜单 (1)- 选择小组件菜单图标可打开活动列表以供选择 ...
重新安装 Windows - Microsoft 支持
使用安装介质重新安装Windows 11. 将创建的安装媒体连接到电脑，然后重新安装Windows 11。. 打开“ 文件资源管理器 ” ，然后选择安装介质所在的驱动器。. 在驱动器的根目录中，双击 setup.exe，然后在系统询问你是否允许应用对你的设备进行更改时选择“ 是 ...
为升级 Windows 11 准备就绪 - Microsoft 支持
安装 Windows 11 在针对你的特定电脑测试和验证 Windows 11 升级后，Windows 更新将指示它已准备好安装。 若要检查 Windows 11 是否已为你的设备准备就绪，请转到“开始” “设置” >“更新和安全性” >“Windows 更新”，然后选择“检查更新”。 如果升级适用于你的设备，并且想要继续，请下载并安装它。