If your system is asking you for your BitLocker recovery key, the following information may help you locate your recovery key and understand why you're being asked to provide it. Important: Microsoft support is unable to provide, or recreate, a lost BitLocker recovery key.

Fix your audio drivers. Hardware problems can be caused by outdated or malfunctioning drivers. Make sure your audio driver is up to date and update it if needed. If that doesn't work, try uninstalling the audio driver (it will reinstall automatically).

To find out which version of Windows your device is running, press the Windows logo key + R, type winver in the Open box, and then select OK. Here’s how to learn more: Select Start > Settings > System > About . Open About settings.

You can use installation media (a USB flash drive or DVD) to install a new copy of Windows, perform a clean installation, or reinstall Windows. To create installation media, go to the software download website, where you'll find step-by-step instructions.

When you’re ready to make your PC sleep, just press the power button on your desktop, tablet, or laptop, or close your laptop’s lid. On most PCs, you can resume working by pressing your PC's power button. However, not all PCs are the same.

You can't open or copy previous versions of files that were created by Windows Backup, but you can restore them. To restore a previous version, select the previous version, and then select. The file or folder replaces the current version on your computer, and the replacement can't be undone.

Booting from a USB device doesn’t refresh or reset your Surface. Instead, it lets you start your Surface using Windows or another operating system that’s on your USB device. For info about how to create a bootable USB drive for your Surface, see Creating and using a USB recovery drive for Surface.

现在，你可以在 Xbox 主机和其他用于云游戏的设备上开飞机了。. 注意 云游戏需要 Game Pass Ultimate 或受支持的免费玩游戏服务。. 云游戏可用性因区域而异，Microsoft 外部测试版模拟器可在支持云游戏的任何地方使用。. 通过云游戏，你可以在 Android 设备、Windows ...

Add an app to run automatically at startup in Windows 10. Select the Start button and scroll to find the app you want to run at startup. Right-click the app, select More, and then select Open file location. This opens the location where the shortcut to the app is saved.

Get help and support, whether you're shopping now or need help with a past purchase. Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.