I've a ASUS N56VZ with Intel Core i7 - 3610QM, with Win 7 Home Premium x64 pre-installed. This computer come with EFI instead of the traditional BIOS.
When I bought it, I had 3 visible partitions. C (System) - with windows and programs; D (Data) - in blank, I store my personal data and movies; E (Recovery) - software from ASUS to recovery computer.
So, as I'm at a Master's Degree in Computer Science, I needed to install Ubuntu. I made a partition from Win 7, reserving around 35 GB for Ubuntu 12.04.
It went fine, and the install was sucessful. I rebooted and I could get into Ubuntu. The boot showed 4 entries: 2 for Ubuntu, and one for Windows and one, for Windows Recover.
When I tried to enter Windows 7, "Windows 7 (loader)", I got this message:
error: Invalid EFI file path. Press any key to continue...
The one for recovery couldn't boot either.
So I get in Ubuntu again, and use repair-tool, which insert new entries on GRUB. Now I have 11 entries!
One of the new entries is called "Windows UEFI loader". The old entry "Windows 7 (loader)" continued to not work. This new one, "Windows UEFI loader", got me into Windows. And I stooped here.
I want a single boot manager with just the two needed options.
I think that this isn't perfect, but I don't know how to solve it.
More, if I'm on Windows 7 and I put it to hibernate, when I turn on the computer, I get a black screen and the message saying that it couldn't restaure the session. (I'm not sure about the exact words. - I was oblied to reboot and start the windows again.)
And this is a major concern. I would like to solve this too.
Here is the link after running the boot-repair:
This one I made it today, with boot-repair and asking for Boot info summary: