Hi, :wave: and welcome to Sysnative Forums.
Click start and in the search box type CMD
Right click CMD and select Run as Administrator
Type this in the command prompt;
sfc /scannow (Note the space between sfc and /)
This command will immediately initiate the Windows File Protection service to scan all protected files and verify their integrity, replacing any files with which it finds a problem.
Please let us know the results in yur next post.