The automatic repair loop might be caused by the following issues:
- filesystem corruption
- corrupt MBR or BCD
- improper registry settings
This article covers all the possible reasons and solutions:
Fix Automatic Startup Repair Loop in Windows 10, 8 and 7 | Password Recovery
I hope this helps!
Having now updated to Windows 10 version 1511 (Build 10586.36) I had hoped this loop would have been cured, but it hasn't. I looked at the new storage feature in the system settings and tried deleting the temporary files which appeared to not work. After a couple of attempts I lost my internet connection and then the automatic repair process started. As before, none of the tools work including system restore. Prior to this I had fortunately made a system image backup, but even that was difficult because I had to manually input the sdclt.exe file and make registry changes. I am not a technician but luckily the internet is a good source for information. It seems very poor that the security features that worked in windows 7 still do not work in windows 10. My advice is to back up your files and use an external back up service like Macrium or AOMEI to create an image file.
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