Power-cut during a session has wiped out my prefs/key commands... anyone had this?

Hi all, just had a short power-cut during a session and restarted to find I have lost today’s work, no back-ups (which there always is) and my presets and Key Commands are gone… anyone else had this?
11 Pro on Windows 10.

Tried System Restore to yesterday, no change. Everything appears to be default.