win 10 boot error

after upgrading to Win 10 home (64bit), boot up fails with an error /BOOT/BCD. If I put the win 10 disk back in the drive and reboot all works, just won't boot with out it in the drive.
I downloaded your tool it has on it:
1 a folder-boot
2 files bootstrap.uf.gz, easyre.ufs.uzip, launchcode, andmd5sum

Will this "fix" my problem with out reloading windows 10?
How would I use it?