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 use Windows File Recovery, a command line app, to try to restore files that have been deleted from your local storage device and can’t be restored from the Recycle Bin. This app requires Windows 10 build 19041 or later and supports only internal drives, external drives, and USB devices.

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 use a USB flash drive or DVD to install, reinstall, or perform a clean installation of Windows 10, 8.1, 7, or 11. Find the software download website, product key, and recovery options.

Fix Windows security issues by turning on UAC, DEP, Windows Firewall, and other features. Run the troubleshooter on your computer or save it to a flash drive or a CD.

Learn how to fix common issues that prevent programs from being installed, uninstalled, or updated on Windows-based computers. Find out how to use troubleshooters, logs, and manual methods to resolve Windows Installer errors.

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

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 reinstall Windows 11 using installation media, such as a USB drive, SD card, or external hard drive. Compare different options and requirements for resetting, reinstalling, or cleaning your PC.

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.