blue screen crash while saving psd. - empty file after restart

Hello, 

After few days of working on particular project in Photoshop CC 2017 (file have been saved plenty of times) I wanted to save it another time.
While saving, Windows crashed with blue screen. - (no dump file available - I don't know why...)
After restart, file contains only one black background layer which was not part of the project earlier. 
Still the file weights 475 MB.
Back up folder is empty.

Did anyone have similar issue? Do you know if/how I can recover my project?

Thanks for help in avance