[ubuntu] Unable to start Windows 7 after installing Ubuntu 12.04 LTS

I hate starting new thread about a problem already encountered by others. But I tried the solutions and did not work:

1) sudo grub-update ==> Did NOT work
2) Boot Repair (Recommended settings) ==> Did NOT work
3) Boot Repair (Advanced Settings - "repair windows boot files") ==> option disabled ==> Did NOT work
4) Windows 7 repair ==> Did NOT work

I have a windows 7 Ultimate x64 plus Ubuntu 12.04 LTS, both on partition C. Partition D is for my files, Partition E is also for my files but encrypted with
BitLocker (I have the recovery key and know the password). All partitions are NTFS.

THE PROBLEM: after booting, 4 options appear: Ubuntu, Ubuntu Recovery Mode, Memory Test, Windows 7. Selecting windows 7 brings a black screen
for 2 seconds then I get back to grub menu.

What options do I have other than formatting C again and installing Windows...?

here's my boot-repair log: http://paste.ubuntu.com/5872398/

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I want to try "restore MBR" in boot-repair, it is a good idea?