Use the System File Checker tool to repair missing or corrupted system ...
The sfc /scannow command will scan all protected system files, and replace corrupted files with a cached copy that is located in a compressed folder at %WinDir% \System32\dllcache. The %WinDir% placeholder represents the Windows operating system folder. For example, C:\Windows.
Recover lost files on Windows 10 - Microsoft Support
Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin. Recovery on cloud storage and network file shares is not supported.
Recover lost or deleted files - Microsoft Support
Restore deleted files and folders or restore a file or folder to a previous state. Navigate to the folder that used to contain the file or folder, right-click it, and then select Restore previous versions. If the folder was at the top level of a drive, for example C:\, right-click the drive, and then select.
Use System Restore - Microsoft Support
Use System restore to make restore points when you install a new app, driver, or Windows update, and when you create a restore point manually. Restoring won’t affect your personal files, but it will remove apps, drivers, and updates installed after the restore point was made.
Disk cleanup in Windows - Microsoft Support
Disk cleanup in Windows. Windows 11 Windows 10. To delete temporary files: In the search box on the taskbar, type disk cleanup, and select Disk Cleanup from the list of results. Select the drive you want to clean up, and then select OK.
Recovery options in Windows - Microsoft Support
Select one of the recovery options below and follow the steps to try to get things working again. Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.
Recover your PowerPoint files - Microsoft Support
Recover your PowerPoint files. AutoRecover is a PowerPoint feature that attempts to recover files automatically in the event of a crash, power failure, or other unexpected application shutdown. It does this by periodically saving a copy of the file in the background.
Applies To: PowerPoint for Microsoft 365
How to use the PC Health Check app - Microsoft Support
How to open PC Health Check. In Windows, use Search on the taskbar to search for “PC Health Check,” then select it from the list of results. If a PC Health Check update is available, you can quickly install it for the latest version.
Find lost files after the upgrade to Windows 10 or 11
Windows 11 Windows 10. Look for the files using Search. If you still can’t find your files, you may need to restore them from a backup. Enable a Windows Administrator account. Learn how to find your old files after upgrading your PC to Windows 10, including search and recovery tips.
System configuration tools in Windows - Microsoft Support
Windows provides a variety of configuration tools tailored to meet the needs of different users. These built-in tools facilitate your device's customization and monitoring, allowing you to change Windows' configuration to suit your preferences and requirements with precision.