Cause. The device has no drivers installed on your computer, or the drivers are configured incorrectly. Recommended Resolution. Update the Driver. In the device's Properties dialog box, click the Driver tab, and then click Update Driver to start the Hardware Update Wizard.Follow the instructions to update the driver.

如果在使用消息时遇到问题，这些疑难解答提示可能会有所帮助。 将媒体添加到对话. 消息框下方有三个按钮，可帮助你在消息中插入内容。 表情符号按钮和 gif 按钮会打开一个菜单，你可以在其中快速搜索所需内容。

This article explains how to use a type of function in Access called an aggregate function to sum the data in a query result set. This article also briefly explains how to use other aggregate functions, such as COUNT and AVG to count or average the values in a result set. In addition, this article explains how to use the Total Row, a feature in Access that you use to sum data without having to ...

为什么我的阅读窗格背景很暗？ 启用暗模式时，阅读窗格将采用深色背景以减少眼睛疲劳。 可通过选择阅读窗格顶部的 调亮阅读窗格。 如果未看到该按钮，请选择 。

OneDrive for Business provides one place to store, share and sync your work or school files.

注意: 默认情况下，所有搜索都是 and 搜索。 必须将 not 和 or 运算符大写。 否则，必应将忽略它们作为停止字词，这些字词和数字是常见的单词和数字，为加快全文搜索速度而省略。

Get support for all Office.com apps, including Excel, Word, and PowerPoint, with step-by-step guidance and troubleshooting.

Microsoft family settings might be hiding apps. Parents can use family settings to make sure that their child can't view or install apps that are inappropriate for their age.

Risolvere i problemi relativi agli accessori Bluetooth. Se è possibile attivare il Bluetooth ma si riscontrano problemi di associazione o di utilizzo di un accessorio Bluetooth, provare la procedura seguente per la risoluzione dei problemi comuni relativi agli accessori Bluetooth.

若要在电子邮件或会议邀请中吸引某人的注意，请在邮件或邀请中键入 @ 符号，后跟其姓名。 这样做将突出显示其姓名，并提示 Outlook 将其添加到“To”行，确保他们注意到，并在收件箱的邮件旁边添加 @ 符号。