What file format? (what is the extension? JPG PSD TIFF ? Is this a socument you have had open in Photoshop and saved? If yes, do you remember what format you used?
Does the file even have an extension (provided you have your OS set to show file extension). I've seen extensions get stripped from file names during renaming, and software needs that information. Arbitrarily adding possible extensions one at a time might fix the problem
No I havenot renamed it and it was a psd file on photoshop cc
You need to provide a _lot_ more information.
History of the PSD file?
For instance did the system crash during the last time it was saved?
Does the file size match your expectations? (for the image size and number of layers)
Do you see a preview in Bridge?
Is the PSD extension still in place?
How have you set 'Maximise PSD and PSB file compatability' In Preferences > File Hadling?
Do you have 'Disable compression of PSD and PSB files' checked?
Anything that might give a clue.
The chances are the file is lost for ever, because we rarely see corrupted PSD files restored successfully.