Hi,
Welcome to the Microsoft community!
try to repair with the steps below:
Initially it will be necessary to download the media creation tool to boot from the Pen Drive or DVD and repair / restore the equipment.
Media creation tool
To download the tool and create a boot disk, use the link: http://go.microsoft.com/fwlink/?LinkId=691209.
After downloading the application, running and completing the steps, follow the next procedure.
Startup Repair
- Insert the DVD or USB drive with Windows 10 installation.
- Make the device boot through it (if you do not know how, check the equipment manual for how to change the boot order to start from the DVD or Pen drive, as you use it).
- As soon as the Windows installation screen loads, click 4. 4. Next and the Repair button will be available.
- Click on it and then on Troubleshooting> Advanced Options> Startup Repair.
- Click Windows 10 and wait for the repair.
- Depending on the damage that has occurred to the files, if the above step does not work, follow the next procedure, where you can reinstall Windows and keep your files.
Restore PC
- Boot with the Pen Drive or DVD as created above.
- When the installation window appears, click Repair your computer.
- Click Troubleshooting.
- Advanced options;
- Click Restore PC or Return to previous version.
- Click Troubleshooting.
- Click Restore your PC.
- Click Keep my files.
Wait for the installation to start and as soon as you finish, you can start Windows normally.
I hope I helped, I await your return.