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i have a big problem. I have a Sony Vaio laptop UEFI with Windows 7 and Ubuntu. I had the version 12.04, then i update it using the update manager and now when i turn on the pc instead of let me choose in which partition i want to enter, all goes black and there's only the writing:

Error: file not found
grub rescue>

Using live USB I tried with boot repair but it didn't work (here's the report http://paste.ubuntu.com/7324719/ ), it said me that I have a broken wubi, but I think i haven't installed it with wubi (i'm not sure but it should be so). I tried to reinstall Ubuntu but it didn't do anything. In addition, i cannot use neither the windows recovery because it gives me the same grub rescue error. May i have some problem with the boot partition? Here's the list of my partition:

Model: ATA ST500LM012 HN-M5 (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start   End     Size    File system     Name                          Flags
 1      1049kB  274MB   273MB   fat32           EFI system partition          hidden, msftdata
 2      274MB   16.8GB  16.5GB  ntfs            Basic data partition          hidden, diag
 3      16.8GB  17.1GB  273MB   fat32           EFI system partition          boot
 4      17.1GB  17.2GB  134MB                   Microsoft reserved partition  msftres
 5      17.2GB  317GB   300GB   ntfs            Basic data partition          msftdata
 6      317GB   318GB   999MB   linux-swap(v1)
 7      318GB   500GB   182GB   ext4                                          msftdata


Model: Lexar JumpDrive (scsi)
Disk /dev/sdb: 16.0GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start  End     Size    Type     File system  Flags
 1      1024B  16.0GB  16.0GB  primary  fat32        boot

I wish to save my files if it's possible (i've already take the most important ones using live USB), but first now i want to save my pc ;) Thank you so much.

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