ubuntu installation crashes during bootloader grub install

[Michael Crabb]

I have a new Lenovo ideapadZ585 - 1TB HD, 8 GB RAM
Attempting to dual boot Ubuntu12.04.2 LTS with (pre installed) Windows 8.
I have Secureboot disabled and UEFI BIOS set (also tried with Legacy, and other combinations).
Tried to install Ubuntu next to Windows8 (also tried manual partitioning too into swap, home and root)
Everytime I try installing, the installation crashes during bootloader, with the error 'grub-install dummy fatal error.
Not sure if this is relevant, but looking at boot setup, 'ubuntu' is an option but when click on this Windows8 loads instead.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubiquity 2.10.24
ProcVersionSignature: Ubuntu 3.5.0-23.35~precise1-generic 3.5.7.2
Uname: Linux 3.5.0-23-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
CasperVersion: 1.315.1
Date: Tue Jul 2 21:34:43 2013
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash --
LiveMediaBuild: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_GB.UTF-8
 TERM=linux
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)