Failed Ubuntu Install Causes Boot Fail

I've spent some time looking for a solution to this issue but can't find anyone who's had the same problem.

When trying to install Ubuntu 12.04 on my refurbished 64-bit Asus X401A I got all the way to the very end of the installation process and it failed saying there was some problem with the grub (sorry for not being more specific). I was booting off a USB stick using unetbootin in UEFI mode (I did this when I was trying out Mint 16 a few months ago on this same laptop and I had no issues whatsoever). The ISO file I'm trying to use is the same one I'm using to run Ubuntu on my Mac's virutalbox. It works there without issue so I don't think it's a corrupt file.

After turning off the computer and booting it back up in UEFI mode I can successfully get to the menu that gives these three options:

- Try Ubuntu without installing

- Install Ubuntu

- Check disc for defects

No matter what option I select I get a black screen. I tested the USB I used for Mint and it does the same thing. If I try booting in any other way via BIOS mode it simply doesn't work.

I'm trying to install this in place of Mint which has been on there for about 6 months now. I don't think even Mint is there anymore, I just get the following when I boot without any USB inserted:

GNU GRUB version 2.00-19ubuntu2.1

Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists possible device or file completions.

grub> _

Is there any chance I can salvage this and install Ubuntu successfully? This is an awesome distro and I really want my backup laptop to have it installed.

Any insight at all will be greatly appreciated!

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