Im Windows 10 user. Today it stopped suddenly and stopped booting. I prepared Window 10 rescue pen drive and boot from it. I did automatic fix (no results) plus entered 3 commands from rescue console:
bootrec /RebuildBcd
bootrec /fixMbr
bootrec /fixboot
Exit
but still no good results.
When I re-entered rescue console I found that disc C is empty (no files) but it's almost full (70 MB free of 1 GB disc).
How to restore booting and data?;) THanks;).
Update 1: disc has been connected to other machine with windows 8 and partition is visible there. I will do backup and try solution proposed by Tim.