Learn how to scan and repair missing or corrupted system files in Windows using the System File Checker tool (sfc/scannow). Follow the steps to run the tool, view the scan results, and manually replace the corrupted files if needed.

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 different ways to remove apps and programs from your Windows 10 or 11 device. Find tips for troubleshooting, repairing, and protecting your system from malware.

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 mirror or project another device's screen to your Windows PC using Miracast. Follow the steps for Windows 11 or Windows 10 to install and use the Wireless Display app or the Connect app.

Learn how to update or reinstall device drivers, such as USB drivers, in Windows 11 or 10 using Device Manager. Follow the steps to search for updated driver software or uninstall and reinstall the driver.

Learn where to enter your Office 2021 product key on different websites and how to install or reinstall Office. Find tips for troubleshooting product key issues and contacting support.

Learn how to set up and fix issues with external monitors on Windows 10. Find out how to update your device, select the Extend option, restart your device, roll back or reinstall your display driver, and use Windows Feedback Hub.

Learn how to connect your Windows 11 PC to external displays, such as TVs or projectors, and adjust the settings for each one. Find out how to use wireless display adapter, rearrange, identify, detect, and change display options for your monitors.