Tryed everything... grub is not installing, I had previous install of linux and had to uninstall, since then install always fails at grub, tried boot-repair, tried deleting UEFI files in windows. nothinf seems to work

[mario]

Grub is damaged.

Cannot reinstall linux.

Already tried boot recovery tools like boot repaire
and mbr fix on windows.
Also tried to delete EFI files ubuntu directory on EFI windows partition.

Still getting the same error.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.63.3
ProcVersionSignature: Ubuntu 4.8.0-36.36~16.04.1-generic 4.8.11
Uname: Linux 4.8.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CasperVersion: 1.376.2
Date: Sun Feb 19 02:43:45 2017
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Phillip Susi (psusi)]

Your EFI system partition is corrupt; you will need to repair it with either dosfsck, or Windows' chkdsk.