Hard drive error

I'm working on a Win10 machine that occasionally crashes on startup with 
the message: Windows has encountered an error.

If I run CHKDSK /F I see that CHKDSK on
Win10 givers no annunciation as it did with previous Windows 
versions...all it does is say that the drive was repaired, then in 
reboots, but it did not actually fix anything.


As a precaution I ran both a memory test and the mfg's full HD 
diagnostic ...no errors found>

I then booted the machine from a Win7 live cd and ran CHKDSK /F and this 
time I was able to now see what CHKDSK was doing.

Here is the message of note:


Index entries referring to file 777285 will not be validated because 
this file contains too many file names.



I Googled this error and most of the forums I've seen advise running a 
utility called diskedit.exe  , then cite some complex instructions.

All the responses post back saying: Tried that but it didn't work.


Now I am stumped and would appreciate some help.