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Select Start > Settings > System > Sound. In Input, select the microphone that you want to test. In Input settings, look at Input volume while speaking into the microphone. If the bar moves while you speak, your microphone is working properly. If don't see the bar moving, go to Test your microphone and select Start test.

Create, edit and share documents with Microsoft Word online. Learn how to use Word for the web to create, open, and rename documents with ease.

从设备中删除Windows Hello和任何关联的生物识别数据. 转到 “开始 > 设置” > 帐户 > 登录选项 。. 选择要删除Windows Hello方法。. 选择“ 删除”。. 你的生物识别数据将保留在你的设备上，直到你将其删除。. 但是，在长时间Windows Hello处于非活动状态后，系统会提示 ...

When Smart charging is on, you’ll see a heart on the Battery icon in the following places—on the right side of the taskbar and in Power & battery settings. When your hover over the Battery icon with your mouse, it says “Fully Smart charged” and means the battery isn’t charging even though your device is still plugged in.

Tìm hiểu cách cài đặt, cài đặt lại hoặc kích hoạt Microsoft 365 hoặc Office 2019 trên PC hoặc máy Mac. Nếu đây là lần đầu tiên bạn cài đặtMicrosoft 365 hoặc Office, bạn có thể phải hoàn tất một tập hợp các bước trước khi cài đặt hoặc bạn có thể cần làm theo các bước khác với những gì được hiển ...

There are four ways to open Snipping Tool: Select the Start button, enter snipping tool, then select Snipping Tool from the results. Press Windows logo key + Shift + S for a static image snip. Press Print Screen ( PrtSc ) for a static image snip. Press Windows logo key + Shift + R for a video snip.

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VLOOKUP 第一个参数是要查找的值。. 此参数可以是单元格引用，也可以是固定值，例如“smith”或 21,000。. 第二个参数是单元格搜索范围 C2-:E7，VLOOKUP 在其中搜索要查找的值。. 第三个参数是单元格范围内包含所查找值的列。. 第四个参数可选。. 输入 True 或 False ...

On the Tools menu, click Internet Options, and then click the Content tab. Click Certificates, and then click the Personal tab. Important: If you digitally sign a document by using a digital certificate that you created, and then you share the digitally-signed file, other people cannot verify the authenticity of your digital signature without ...