Learn how to locate your BitLocker recovery key, a 48-digit number needed to unlock an encrypted drive in Windows. See where to find it attached to your Microsoft account, work or school account, printout, or USB flash drive.

Learn how to use the System File Checker tool (SFC.exe) to scan and restore Windows system files that are not working or causing crashes. Follow the steps to run SFC.exe, view the scan results, and manually replace the corrupted files if needed.

Learn how to download and install Windows 10 updates and firmware updates to fix a security vulnerability in certain TPM chipsets. You also need to clear your TPM after updating.

Learn how to update your Surface device with the latest drivers and firmware for Windows 10 or Windows 11. Find links for automatic and manual updates, and check your Surface model and OS build.

Learn how to use the Program Install and Uninstall troubleshooter to fix corrupted registry keys, prevent programs from being installed or removed, and access the product code. The troubleshooter runs on Windows 10, 8.1, 8, and 7.

Learn how to update your controller wirelessly, with a USB cable, or on a PC using the Xbox Accessories app. The app lets you customize the Xbox Elite Wireless Controller Series 2 and check for new updates.

Learn how to use PC Health Check app to check your device health, battery capacity, storage capacity, startup time, and Windows 11 eligibility. Find out how to install, update, and troubleshoot the app.

Learn how to create a USB flash drive or DVD to install or reinstall Windows 11, 10, 8.1, or 7. You'll need a reliable internet connection, a blank storage device, and a product key (if applicable).

Windows 11, version 23H2 is a scoped feature update that activates new features in Windows 11, version 22H2. Learn how to install the enablement package that turns on the new features with a single restart.

Learn how to check and enable TPM 2.0, a security feature required for Windows 11, on your PC via UEFI BIOS (firmware) settings. Find links to PC manufacturer's support information and other Windows 11 system requirements.