How to solve this error make sure you specify the correct path and file name?

Listen to your upstairs neighbour! Provide more details!

Anyway, I'm guessing you want to rename or delete a file/folder and you get that error.
Maybe your file names/folder names contain characters from the extended character set...

1.Try renaming/deleting (depends on what you want) the files/folders from safe mode (f8 key on startup)
2.You can try renaming/deleting the files/folders via command prompt. :hello:
(if you don't know how to use cmd I'll provide more details)