preparing automatic repair loop

[lscherer]

HP notebook 2015 Windows 10

Computer is reading Preparing  automatic repair. I have tried to hard boot but won't work. I didn't install any new software. I think it was caused by a power outage. 

[TheOldMan]

That typically means the Windows install has been corrupted and Windows it trying to make repairs.  If it does not finish from the self-repair, you can try doing a repair from the install media.  You can make the media from here:

https://www.microsoft.com/en-us/software-download/windows10

With a working PC, scroll down to the "Using the tool to create installation media"
and then follow the directions. You can make either the DVD or USB.

Then use this new media to boot the problem PC and pick "repair this PC" once the media install screen pops up.

If it still is unsuccessful, then you will probably need to reinstall Windows 10 from this same media you just made.

It might be wise to run the diagnostics from the popup menu

To run the Diagnostics routine, start tapping the Esc key and then press the start button.
Keep tapping the Esc key until a popup menu shows. Then pick Diagnostics from that popup menu, F2.
Report back with the results.