It will automatically fix any issues that it finds. Now allow the SFC tool to perform the offline check of system files and fix any integrity issues. Note that offbootdir contains the letter of your 'System Reserved' partition and offwindir is the volume on which your broken, unbootable Windows 10 is located. Note the proper drive letter of the partition where you have the damaged, unbootable Windows 10. Click 'This PC' in the left pane of the Open dialog to see your PC drives.
When Notepad opens, open the File menu -> Open. When the 'Windows Setup' screen appears, press Shift + F10 keys together.(You may need to press some keys or change BIOS options to boot from USB.) Insert your bootable media and boot your PC from USB.
Here is how to perform the offline scan with the sfc command in Windows 10.
