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#31
You can use OPTION THREE of SFC /SCANNOW Command - System File Checker and replace the files manually using the tip within that OPTION. After doing so, restart your computer and run SFC /SCANNOW again to see if it still says there are errors it could not fix. If it still says there are errors, then you are left with the repair install again.
I usually recommend the repair install first because manually replacing the files has only worked in about 20% of these cases when I have asked users to resolve the errors themselves.