Had a volunteer working on a bookkeeping machine cleaning up data and trying to make sense of misc documents scattered all over the place and they said they cleaned up ALL files on the C drive, including the Windows folder!
Another words, they tried to "help" by organizing files and who knows what they moved where. Can they move anything essential in the Windows folder if the option to hide protected operating system files (by default) is on?
Windows seems to boot and respond fine. Any checks that should be performed (perhaps sfc /scannow) ?