To repair the corrupted files manually, view details of the System File Checker process to find the corrupted file, and then manually replace the corrupted file with a known good copy of the file. Open an elevated command prompt, as described previously.

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Explains how to back up the registry for restoration in case it gets corrupted in Windows 10, Windows 8.1, Windows 8, or Windows 7.

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.

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In Windows, a CD or DVD drive may not appear in File Explorer and may show a yellow exclamation point in Device Manager. This issue usually indicates a driver or configuration problem, and an error code may appear in the device’s Properties under Device status.

Learn how to run System File Checker in Windows to check if your computer has problems with files.

If invalid entries are detected, it refers to the real-mode version of the Windows Registry Checker tool (Scanreg.exe) for a resolution. You can configure Windows Registry Checker with a Scanreg.ini file.

Regedt32.exe is the primary Registry Editor for Windows NT 4.0 and Windows 2000. If you must use Regedt32.exe, you cannot use Registration Entries (.reg) files to modify the registry.

Follow these steps to reinstall Windows using the recovery media: 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.