Hello, thanks for the reply.
I've checked those logs and they are not really helpfull, and pretty much empty (considering the amount of data being treated)
Since the computer/windows would not restart (looping into recovery), i've tried to replay the registry backup from the command line of windows recover fonction, but without results, but i can try to dig in the reg file.
The original reason for me to run the tool was that there was an error message in loop when user opened his session, along the lines of "explorer.exe the system has detected a buffer overun ... " (sorry error was not in english) with explorer crashing/restarting/crashing in an infinite loop.
Only way to go was to boot into safe mode, where the message would be displayed and then not quit the message box allowing me to try some stuff.
chkdsk
sfc/scannow
adwcleaner
Antivirus program
no software returned anything interesting, hence the decision to run windows repair AIO, as i used previously several times.
Worth noting, that i had a similar problem 4/5 years ago, but since the computer restarted properly and that i had an external backup of the files, i did not look into it.
Xavier