When you install Office 2010, you'll be prompted to enter a 25-character product key that looks something like this: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

Tips for creating an effective presentation. Consider the following tips to keep your audience interested. Minimize the number of slides. To maintain a clear message and to keep your audience attentive and interested, keep the number of slides in your presentation to a minimum.

For a black screen, use the following keyboard shortcut: Windows logo key + Ctrl + Shift + B to reset your graphics driver.

Turn on Find my device. When you set up a new device, you can decide whether to turn on or turn off the Find my device setting. If you turned it off during setup and now want to turn it on, make sure your Windows device is connected to the internet, has enough battery power so it can send its location, and that you're signed in to the device using your Microsoft account.

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。

Use the Xbox app on mobile, Xbox.com, or the Microsoft Store on PC to remotely install games to your console or PC—so your games are ready when you are.

On the settings page for that app, change the setting for Let this app run in the background.Here’s a summary of each option: Always: The app is always allowed to run in the background—receive info, send notifications, and stay up to date—even when you’re not actively using it. However, it might use more power as a result.

As you browse the web, you'll see an icon in the address bar that indicates the security of the connection to the site you're visiting. This icon helps you determine if you can safely send and receive information from the site.

Get started with Microsoft Teams (free). Explore your options, find out what’s new, browse help topics, and more.

Select the View tab and, in Advanced settings, select Show hidden files, folders, and drives and OK.