Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista.

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.

You can use installation media (a USB flash drive or DVD) to install a new copy of Windows, perform a clean installation, or reinstall Windows. To create installation media, go to the software download website, where you'll find step-by-step instructions.

If installation doesn't start automatically, browse the disc to find the program setup file, usually called Setup.exe or Install.exe. Open the file to start installation. Insert the disc into your PC, and then follow the instructions on your screen. You might be asked for an admin password.

Learn how to update your security processor or TPM firmware to protect Windows 10 and your device from attacks by malicious software.

Choose the apps that will run when you start your device. Go to Start > Settings > Apps > Startup. Open Startup settings. For any app in the list, select the toggle to set it to On. If you want to change the advanced settings for that app, select the arrow and make changes as desired.

Select the Microsoft 365 folder from the virtual drive and then double-click either the Setup32.exe to install the 32-bit version of Microsoft 365, or Setup64.exe to install the 64-bit version to begin the offline installation.

Follow the steps below to download and open the Support and Recovery Assistant according to your browser. Tip: The tool may take a few minutes to download and install. Edge or Chrome. In the lower-lower left or upper-right corner, right-click SaraSetup.exe > Open. Edge (older) or Internet Explorer.

Windows 11 Windows 10. If you're having problems with Windows 11 on your PC or you want a fresh copy of Windows 11 without the clutter of old files or apps, you can reinstall Windows 11 to try and fix your issues and return your PC to a cleaner state. Check your disk space.

Press Windows logo key + S or select Search, type cmd, and then select Run as administrator under Command Prompt on the right side. Then type the following command and press Enter: schtasks.exe /Run /TN "\Microsoft\Windows\Application Experience\Microsoft Compatibility Appraiser"