Every now and then Windows 10 can become unstable and corrupted. When system files become corrupt, windows may now work properly and you will need to repair windows installation files. If you are a beginner user of windows 7, windows 8/8.1 or windows 10 and have backed up all your data, you may want to reinstall windows to save time. You can use Reset this PC or do a fresh install of Windows 10. On the other hand, if you want to repair windows 7, windows 8/8.1 or windows 10 and have loads of programs and stuff on your computer that you don't want to reinstall, then repairing windows operating system files is the only way to solve your computer problem. Windows Resource Protection found corrupt files but was unable to fix some of them. Step 1. Backup all your computer data. Step 2. Troubleshoot your computer error or problem and determine whether its a hardware or software problem. Attempt to Fix Corrupted system files in Windows 10 Step 3. How do I check Windows 10 system files? Run the System File Checker in Windows 10/8/7 type sfc /scannow in command prompt to fix/repair windows files. Step 4. If you having trouble running SFC at the desktop try and eliminate any possible interference from third-party apps and try to run SFC scan from Safe Mode. Hold the Shift key and choose the Restart the computer, now Select Troubleshoot / Advanced options / Startup Settings. choose 4 to Restart to safemode Step 5. Sometimes you need to scan and repair protected system files, outside of Windows 10. To do this Hold the Shift key and choose the Restart the computer. navigate to Troubleshoot / Advanced options / Command Prompt