installation prooncess failed on grub installation

lenovo ideapad mllx 300
2gb ram 1333
32gb emmc
10" wxc
ga ts
battery 2 cell 25.9wh
wlan non-intel 1x1 bgn+bt4.0
model 80nr
notebook ip miix 300-10lby z3735f 32 10h
went through the hole installation process with out a hitch aaaaand keeps fail;ing on the last part of the install grup install

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: ubiquity 2.21.37 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu3
Architecture: amd64
CasperVersion: 1.365
Date: Sat Apr 30 15:31:49 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
ProcEnviron:
 LANGUAGE=en_GB.UTF-8
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)