How to find and repair corrupted files

If you doubt that your system files are corrupted, you can fix them by using SFC tool. This is a command line tool, and it will scan your PC and repair any corrupted system files. To start SFC tool, you need to follow these steps:
Step 1. Press Windows Key + X to open Win + X menu and choose Command Prompt (Admin).
Step 2. When Command Prompt opens, enter sfc /scannow and press Enter.
Step 3. Repair process will now start. Don’t close Command Prompt or interrupt the repair process. The repair process can take a while, so wait patiently while it completes.