拥有 BitLocker 恢复密钥的备份副本有助于防止以后出现严重问题。 备份密钥不到一分钟，本文将介绍如何备份密钥。 保存到 U 盘 - 如果你有一个方便的闪存驱动器，则可以保存该驱动器的密钥。 如果将来计算机要求提供密钥，只需插入该 U 盘并按照屏幕上的说明进行操作。

This article applies if you’ve recently made changes to your device hardware and are trying to upgrade to Windows 11. Hardware changes might affect your upgrade eligibility, though you’ll need to take a few steps to see your updated eligibility in Settings.

查找有关 Windows 操作系统的帮助和操作方法文章。 获取对 Windows 的支持，并了解安装、更新、隐私、安全等方面的信息。 使用 Windows 11 让日常任务更加轻松 当有很多任务时，Windows 11 可帮助你完成它们。

Turn on your Xbox Wireless Controller by pressing the Xbox button .; Press and hold the Pair button on your controller for three seconds (the Xbox button will start flashing rapidly).; On your PC, press the Start button , then choose Settings > Devices > Bluetooth & other devices (on Windows 11: Settings > Bluetooth & devices).; Turn on Bluetooth. ...

Step 2: Back up your folders. Windows Backup is an easy, single stop for all of your backup needs. Your free Microsoft account comes with 5 GB of OneDrive cloud storage (and more storage is available if you need it), and backing up your folders syncs the folders you specify to your OneDrive account, making them instantly accessible on all computers that you use with this Microsoft account.

OneDrive is your online cloud storage within Microsoft 365. It lets you store your individual work files that you don't want your colleagues to have access to unless you choose to share the files with them.

Check the Xbox services, games, and apps for any service outages.

如果您需要对 Microsoft 产品和应用的支持，您可以访问这个网站，查找相关的帮助主题，或者联系专业的支持人员。

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

Use System restore to make restore points when you install a new app, driver, or Windows update, and when you create a restore point manually.