查找 Windows 7 或 Windows 8.1 的产品密钥. 卸载或重新安装 Windows 7 或 Windows 8.1 时，通常需要产品密钥。 通常，如果购买的是实物 Windows 拷贝，产品密钥应该在标签上或者在 Windows 随附包装盒中的卡上。

注意: 如果你有当前版本的 Microsoft 365，则只需在输出区域的左上角单元格中输入公式，然后单击 ENTER 以确认公式为动态数组公式即可。 否则，必须首先选择输出区域，在输出区域的左上角单元格中输入公式（公式必须作为遗留的数组公式进行输入），然后按 Ctrl+Shift+Enter 进行确认。

When someone shares a folder with you, it appears in the Shared section of your OneDrive.com.If you have Edit permissions to those shared folders, you can add them to the My files section of your OneDrive to make them easier to access and work with. If you want to view and access shared folders on your PC or Mac, install the OneDrive app and sync your folders to your device.

To play HDR video in Windows 11, your display, PC, and graphics card must meet certain requirements. Here are the requirements: Display. Your display can be a built-in display, like the kind on a laptop, tablet, or 2-in-1 PC, or it might be an external display that’s connected to your PC.

Left bumper (2) and right bumper (8): These are oblong-shaped pressable controls that reside on the top of the controller to the left and right of the USB charging port.These controls are used to interact with games, apps, and the console interface. They are often used to let you jump between sections of the interface but have varied functionality depending on the game.

Training: With SharePoint Online, build intranet sites, create team or communication sites, find and follow news, and more. Watch this video to learn how.

Stay connected to the audience. One of the benefits of using PowerPoint Live to present instead of sharing your screen is that you have quick access to all your meeting tools you need to engage with the audience and to read the room in one view.

While you’re playing a game, press the Windows logo key + G to open Game Bar.

With External Access for Teams, you can add or invite anyone outside of your Teams org who uses Teams, Teams for personal use, Skype (for consumers), and Skype for Business to a one-to-one chat.

After you've invited people to your meeting, you can add up to 10 co-organizers to help manage your meeting. Co-organizers are displayed as additional organizers in the meeting participant list and have most of the capabilities of the meeting organizer.