If you need help restoring an overwritten file, then your first choice would be an existing backup file or previous version of the file. Right-click on the folder containing the file and look for Properties, where you will find the Previous Versions option, if any. You can also look at the File History option or check for version history of the file in OneDrive. If you are using Mac OS X, then try Time Machine to retrieve a copy of the file before it was overwritten. If the file was created in some program such as Microsoft Word, then check if the program has version history or an auto-recovery feature. Do not make any further changes to the drive with the affected file until you have exhausted all these possibilities. Notchox data recovery software may be helpful when there is original data remaining in the file. However, there is no software that can recover overwritten data.