TsVk! covered every command I would have used. This sounds like the Windows partition itself is corrupted. Following the commands in post #2 to get a command prompt type the following commands.
Post the output
Edit: Follow the steps in the below link. It's for repairing a Windows 8 EFI partition but the same holds for Windows 10. The steps are essentially everything you have done with the exception of assigning a letter to your FAT32 EFI partition and changing the path to the Boot dir on the EFI.
If the steps do not solve the problem and you wish to do a clean install I can provide instructions on preparing the disk using diskpart and a guide for a clean install but it may be a good idea to check the hard drive for failure.
If the computer has SecureBoot it may have to be disabled in order to boot the UBCD. Burn the UBCD to a CD and at the menu screen select Parted Magic. At the Parted Magic desktop click on Disk Health. Do the short and long tests. You can create a bootable USB flash drive with Rufus.
Run Rufus with the USB flash drive attached. Select MBR partition scheme for BIOS and UEFI. Leave all boxes as checked. Where FreeDos is shown in the dropdown box select iso image, click the icon, and browse to the iso file. Press Start. Any data on the flash drive will need to be backed up as the drive will be formatted.
Edited by JohnC_21, 12 October 2016 - 09:04 AM.