Battery Life: Lowering your refresh rate can save battery power by reducing the amount of energy your display consumes.This can be useful when you are using a laptop or tablet and want to extend your battery life.

如何在 Excel 中使用 LOOKUP 函数在单个行或列中搜索，并从第二行或列中的相同位置查找值。 数组形式：强烈建议使用 VLOOKUP 或 HLOOKUP，不要使用数组形式。 观看此视频，了解如何使用 VLOOKUP。提供数组形式是为了与其他电子表格程序兼容，这种 ...

Sometimes you need to make a change to your email account settings. If you have a new password, if your email provider has asked you to change settings, or if you're having problems with sending and receiving email, you can change your email account settings through Mail in the Windows Control Panel, or from Outlook.

了解如何检索忘记的 Office 家庭版或 Office 商业版帐户的用户名或密码。 Microsoft 365 商业版 如果你的 Microsoft 365 产品是以下之一，则你拥有 Microsoft 365 商业版 产品。 这些产品通常与工作或学校帐户相关联，且 Microsoft 365 许可证（如果你的订阅拥有一个 ...

Windows 设备可能会在不同时间获得新功能，因为 Microsoft 通过多种服务技术提供非安全更新、修补程序、改进和增强功能，包括受控功能推出 (CFR)。 如果你需要重启设备来完成更新，Windows 会通知你，你可以选择最适合你完成更新的时间。

查找 Microsoft Excel 帮助和学习资源。 了解如何有效使用 Excel 的指导文章、指南、培训视频和提示。 跟着现场讲师学习 Microsoft 提供实时指导，帮助你学习 Excel 公式、提示等，从而节省时间并提升技能。

插入或删除行和列 文章 在 Excel 中选择单元格内容 文章 冻结窗格以锁定行和列 文章 隐藏或显示行或列 文章 筛选唯一值或删除重复值 文章 使用“文本分列向导”将文本拆分为不同的列

Notes: If you know your password, but just want to change it, go to account.microsoft.com Security tab, and select Change my password. If you know your username and password but they have stopped working, read My username and password have stopped working.

If you need instructions for adding an email account using advanced settings, go to Use advanced setup to add a POP or IMAP email account in Outlook for PC. Outlook won't accept my password. If Outlook won’t accept your password and you know you’re using the right password for your Gmail account, you might have an older version of Outlook that doesn't currently support this faster Gmail ...

Note: If you forgot your account info and had to reset your security info, you must wait 60 days before closing your account.