When critical Windows system files are missing or corrupted, your operating system may begin to malfunction. Common symptoms include Windows features not working properly, system errors, or Windows becoming unresponsive or freezing.

Learn how to use the Gaming Services Repair Tool to troubleshoot installation and update issues with Gaming Services on PC.

Startup Repair is a Windows recovery tool that can fix certain system problems that might prevent Windows from starting. It scans your computer for the problem and then tries to fix it so your computer can start correctly.

Use this tool to find and remove specific prevalent threats and reverse the changes that they made (see Covered malware families). For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.

Fixing the Secure Boot bypass described in CVE-2023-24932 requires revoking boot managers. This could cause issues for some device boot configurations. Mitigations against the Secure Boot bypass detailed in CVE-2023-24932 are included in the Windows security updates that were released on July 9, 2024, and later updates.

To return your computer to a normal startup, follow the steps in the section, Reset the computer to start normally after clean boot troubleshooting. If the installation or uninstallation still fails, that means this issue is not caused by interference from a service or an app.

Reset this PC how to reset your PC. If you can’t install, uninstall, or update a desktop program in Windows 10, the Program Install and Uninstall troubleshooter can automatically fix common issues such as corrupted registry keys or incomplete uninstall data.

Start your device from the USB drive that was created with Recovery Drive. The process to boot from a USB drive may vary by manufacturer, so refer to your device's manual if needed. Create a recovery drive to reinstall Windows in case you experience a major issue such as hardware failure.

Secure Boot is a security feature in Unified Extensible Firmware Interface (UEFI) based firmware that helps ensure that only trusted software runs during a device's boot (start) sequence.

Here's a list of startup settings that you can choose from. To select one, use the number keys or function keys F1-F9: Enable debugging. Starts Windows in an advanced troubleshooting mode intended for IT professionals and system administrators. Enable boot logging.