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.

First, you'll need to download the troubleshooter. Download troubleshooter. If you see the File Download box when you start downloading, select Run or Open. The troubleshooter provides steps for you to follow. If a program isn't listed in the uninstall options, you'll be asked for that program's product code.

Follow the steps in the section, How to start the Windows Installer service when system services are not loaded. Then try installing or uninstalling the app or update again. If the installation or uninstallation is successful, your issue is resolved.

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Plan and perform Secure Boot certificate updates across your device fleet through preparation, monitoring, deployment, and remediation. In this section.

Disabling Secure Boot significantly reduces device protection, removes safeguards against boot‑level malware, and can create new security and compliance risks. The recommended path is to ensure your device receives the updated 2023 Secure Boot certificates and any required OEM firmware updates.

Download the drivers for the desired device from the device manufacturer's site. Make sure to download the correct drivers that match the version and architecture of Windows. Once downloaded, if necessary, uncompress the downloaded drivers. Make a note of where the drivers are located on the Windows device.

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.

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.

Get Help has troubleshooters you can run for many common scenarios. These often help resolve issues without the need to contact support. If a troubleshooter is available for your issue, select Start to run that troubleshooter. After you run any troubleshooter, Get Help provides details on any findings and suggestions for possible remedies.