重要: 初始化电脑（或使用 全新启动）将删除你的大部分应用，包括 Microsoft Office、第三方防病毒软件以及设备上预安装的桌面应用。你将无法恢复已删除的应用，并将需要手动重新安装这些应用。 你还可能丢失与应用关联的数字许可证和数字内容，可能会影响你使用这些应用或你已付费的与应用 ...

Surface 无法打开或启动; 强制关闭并重启' 显示“无可启动设备” 卡在徽标屏幕上; 显示“找不到可启动的操作系统” 显示“选择选项”屏幕; 开始自动修复; 卡在“恢复”屏幕上; 卡在驱动器图标上; 忘记了 UEFI 密码; 显示红色条形图和未锁定锁图标

本文适用于由于电脑当前无法安全启动而无法升级到 Windows 11的用户。 如果你不熟悉此级别的技术详细信息，我们建议你查阅电脑制造商的支持信息，获取特定于你的设备的更多说明。 安全启动是一项重要安全功能，旨在防止在电脑启动时加载恶意软件， (启动 ...

If you’re having sound or audio problems, the following suggestions might help. The tips are listed in order, so start with the first one, see if that helps, and then continue to the next one if it doesn’t.

注意: 如果你拥有的是套件，如 Microsoft 365 家庭版、Office 家庭和学生版 2016 或 Office 家庭和学生版 2013，请搜索套件名称，即便你只想修复 Word 或 Excel 等特定应用程序。如果你拥有的是独立应用程序，如 Word 或者 Excel，请搜索应用程序名称。

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

When you first sign into Microsoft Defender on Android, we'll walk you through a few easy steps that start with setting up web protection.During this process, we'll ask you to give Defender permission to do two things: run in the background and use the Accessibility Service.

To delete a page that contains text, graphics, or empty paragraphs, select the content to delete, and press Delete.You can also do this:

Where can I find my BitLocker recovery key? BitLocker likely ensured that a recovery key was safely backed up prior to activating protection. There are several places that your recovery key may be, depending on the choice that was made when activating BitLocker:

To check activation status in Windows 11, select the Start button, and then select Settings > System and then select Activation .. Your activation status will be listed next to Activation.. Check activation status in Settings. You'll see one of these activation status messages on the Activation page: