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.

In the details pane, right-click or swipe down on Windows Installer, and then select Start. Describes how to use the clean boot process to troubleshoot a problem in Windows 8.1, Windows 8, Windows 7, or Windows Vista.

Find solutions to common problems or get help from a support agent. By pressing submit, your feedback will be used to improve Microsoft products and services. Learn how to get the latest Windows updates. Find answers to FAQ about updating Windows to keep your PC up to date.