电脑无法启动，并且你已创建恢复驱动器. 使用恢复驱动器还原或恢复电脑. 你想要重新安装之前的操作系统. 回退到以前版本的 Windows. 你的电脑性能不佳，并且你最近安装了应用. 从系统还原点还原. 你怀疑自己的设备已被感染. 使用安装媒体重新安装 Windows 11 ...

Select the Start button , and then select Control Panel. In the search box, type Performance Information and Tools, and then, in the list of results, select Performance Information and Tools. Select View and print detailed performance and system information. In the System section, you can see what type of operating system you're currently ...

If you're a small business owner. Find the information you need to build, run, and grow your small business with Microsoft 365. Visit Small business help and learning. Get help and support for Microsoft Edge. Find Microsoft Edge support content, how-to articles, tutorials, and more.

To manually troubleshoot or upgrade your installation of the Player, try the following: Click the Start button, type features, and then select Turn Windows features on or off. Expand Media Features and see whether the Windows Media Player check box is selected. If it is, clear the check box. Click OK and then restart your PC.

Right-click on the desktop you want to change. Select Choose background. Select the list in the Personalize your background section, then select Picture. Select a picture. Use multiple desktops in Windows to organize projects, or quickly switch between desktops before a meeting.

Start Microsoft Teams by doing one of the following: In Windows, select Start > Microsoft Corporation > Microsoft Teams. On Mac, open the Applications folder and select Microsoft Teams. On the web, go to https://teams.microsoft.com. Sign in with your Microsoft 365 username and password. Notes:

To open the Start menu—which contains all your apps, settings, and files—you can do any of the following: On the center or left end of the taskbar, select the Start icon. Note: Your taskbar settings determine where the taskbar is located. Press the Windows logo key on your keyboard. Swipe up from the bottom center or left of your screen ...

Select all the elements of the signature, right-click and choose Copy. On the Message tab, in the Include group, select Signature > Signatures. Choose New and type a name for your signature. For example: "Business" or "Personal". In the Edit signature field, right-click and select Paste. Your signature is now displayed in the field.

If you can't sign into your Microsoft account, most issues can be identified by our sign-in helper tool. The tool will ask you to enter the email address or mobile phone number you're trying to sign in with and check the details you provide. If we detect a problem with your account, we'll tell you what you need to do to solve the problem.

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