http://www.woodsmall.com/SFC.txt System File Checker for WINDOWS 10/6/2020 IF YOU EXPERIENCE A POWER OUTAGE OF YOUR Windows COMPUTER, YOU SHOULD (when power is restored) run WINDOW's System File Check (SFC) program to fix damaged files. If your files are damaged, it is important to fix them immediately, before you cause more damage. If your power goes out and you are using your plug-in computer (not a battery powered laptop), you very likely have damaged files. If your computer is plugged into a functional UPS (Uninterruptible Power Supply), your computer will continue to run normally until you drain the battery in your UPS From the desktop, press the Win+X hotkey combination and from the menu select Command Prompt (Admin). ... Click Yes on the User Account Control (UAC) prompt that appears, and once the blinking cursor appears, type: SFC /scannow and press the Enter key. System File Checker starts and checks the integrity of system files. If you have large hard drives, this might take 25 minutes. If you have Sold-State-Drives (SSDs)this will be done quickly. You will get one of these messages at the end: 1) NO damaged files were found 2) Damaged files were found (tells you where to find the list) AND FIXED 3) Damaged files were found and some were NOT fixed Good Luck HERE IS A RESULT I OFTEN GET AFTER A POWER OUTAGE & CORRUPTED FILES WERE FIXED: Microsoft Windows [Version 10.0.19043.1766] (c) Microsoft Corporation. All rights reserved. C:\WINDOWS\system32>sfc /scannow Beginning system scan. This process will take some time. Beginning verification phase of system scan. Verification 100% complete. Windows Resource Protection found corrupt files and successfully repaired them. For online repairs, details are included in the CBS log file located at windir\Logs\CBS\CBS.log. For example C:\Windows\Logs\CBS\CBS.log. For offline repairs, details are included in the log file provided by the /OFFLOGFILE flag. C:\WINDOWS\system32> How Do I Run the System File Checker in Microsoft Windows ... https://www.dell.com/support/article/en-us/sln32294/how-do-i-run-the-system-file-checker-in-microsoft-windows?lang=en http://www.woodsmall.com/SFC.txt Difference-Between-SFC,-CHKDSK,-and-DISM-Windows-11.txt My suggestions: 1) Backup your hard drive - run Administrative Command Prompt and create a Restore Point 2) run Administrative Command Prompt and then enter: sfc /scannow may take 5-25 minutes 3) If no UNcorrectable errors, run Administrative Command Prompt and then enter: CHKDSK /F SFC analyzes your system files while CHKDSK searches your hard drive and DISM scans and patches faulty files in the component store of the Windows system image, allowing SFC to function correctly. Make a backup of your disk partition before executing DISM, just in case anything goes wrong during the process. Difference Between SFC, CHKDSK, and DISM Windows 11 SFC analyzes your system files while CHKDSK searches your hard drive and DISM scans and patches faulty files in the component store of the Windows system image, allowing SFC to function correctly. Make a backup of your disk partition before executing DISM, just in case anything goes wrong during the process: https://www.easeus.com/partition-manager-software/difference-between-sfc-chkdsk-and-dism.html When the System File Checker (SFC) cannot resolve issues on a computer, the DISM utility is often employed. The DISM tool can repair Component Store Corruption, which is known to hinder SFC Scan from operating correctly on a computer when it is used. Keep in Mind: If SFC is corrupted and does not function properly for whatever reason, you can restore it using DISM. To enable DISM, you only need to do the steps outlined below. Step 1: By right-clicking Command Prompt and select Run as administrator, you can start Command Prompt as an administrator. Important: Type the Following Command: DISM /Online /Cleanup-Image /RestoreHealth Step 2: To execute the command, press the Enter key. Step 3: For it to complete the scan, which can take anywhere from five to 10 minutes, sometimes even longer. Step 4: As soon as DISM has completed scanning your computer, restart your computer. Notification: Don't worry if the progress meter seems to be stopped at 20 percent; this is quite normal; you need to be patient. What is the Difference Between SFC, CHKDSK, and DISM? SFC analyzes your system files while CHKDSK searches your hard drive and DISM scans and patches faulty files in the component store of the Windows system image, allowing SFC to function correctly. Make a backup of your disk partition before executing DISM, just in case anything goes wrong during the process. To execute DISM, you'll need to start a Command Prompt with elevated privileges, just as you did with CHKDSK and SFC. You can first determine whether or not the picture is corrupted without making any modifications, which will save you time and the chance of doing fixes that aren't necessary. Conclusion Now that you know what CHKDSK, SFC, and DISM perform, you can try running one or more of these Windows troubleshooting tools to see if they can assist you in fixing your computer. If you're still experiencing problems, you can try a System Restore procedure. In this case, your system data, configurations, and applications will be restored to a previous state in which they were operational. Extra Tip: Repair Disk Error with Free Disk Manager - I have NOT tried this - AVOID IT Last but not least, the most important of all, EaseUS Partition Master Free Edition has long been a top-of-the-line choice for anyone looking for a sophisticated but simple-to-use disk management application that also happens to be completely free. CHECK IT'S REPUTATION OUT, DO NOT JUST RUN IT - I have NOT tried this - AVOID IT https://www.easeus.com/partition-manager-software/difference-between-sfc-chkdsk-and-dism.html /// CHKDSK /F /R /X Commands to Scan & Fix Hard Drives | AVG https://www.avg.com/en/signal/how-to-use-chkdsk-windows http://www.woodsmall.com/Difference-Between-SFC,-CHKDSK,-and-DISM-Windows-11.txt ======================================================== I know NOTHING about these articles and devices. I have NO medical training of any kind. I am just reposting as a free service I am NOT responsible if you do, or do not do, ANYTHING CAVEAT EMPTOR David Woodsmall MAIN WEB PAGE: http://www.woodsmall.com/