Pak corruption or tampered files

Pak corrupted or tampered files ,no mods, and ive tried verifying and reinstalling. does anyone have a fix for this?

if anyone gets this trying goin to properties on your c drive then tools then running error check it seems to have worked for me…so far

or you can Click Start.

In the search bar, type CMD .

Select Run as Administrator.

On the User Account Control (UAC) prompt, click Yes.

In the command prompt window, type SFC /scannow and press Enter

I hope this helps.