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I have a new lap top, an Asus N76V that has two 500gb hard drive. Windows7 is installed in the first HD in UEFI. I have tried to install ubuntu 12.04 64bits in the second hard drive.

I have used the Ubuntu live CD and the first strange thing is that ubuntu can not recognize the partitions of the first HD where windows 7 is installed. So I don't get the option to install together with wind7. I make the manual generation of the partitions for ubuntu in hard drive 2 and install ubuntu (not UEFI). Everything goes well and I can successfully boot ubuntu.
But when I try to boot windows7 the windows boot manager it gives me the following error

(windows failed to start..... etc etc.... File:\Boot\BCD Status:0xc000000e)

The thing is that I don't think windows has corrupted files because if I erase ubuntu Win7 is able to boot just fine. I also have tried to install ubuntu with wubi, but although windows is able to boot perfectly, windows boot manager gives an error quite similar to the one obtained for windows7 in the live CD installation. In summary, I can not dual boot the 2 OS.

Here is some info obtained by Boot info Script:

      Boot Info Script 0.60    from 17 May 2011


============================= Boot Info Summary: ===============================

 => No boot loader is installed in the MBR of /dev/sda.
 => Grub2 (v1.99) is installed in the MBR of /dev/sdb and looks at sector 1 of 
    the same hard drive for core.img. core.img is at this location and looks 
    for  on this drive.

sda1: __________________________________________________________________________

    File system:       vfat
    Boot sector type:  Unknown
    Boot sector info:   No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        

sda2: __________________________________________________________________________

    File system:       
    Boot sector type:  -
    Boot sector info:  
    Mounting failed:   mount: unknown filesystem type ''

sda3: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows Vista/7
    Boot sector info:   No errors found in the Boot Parameter Block.
    Operating System:  Windows 7
    Boot files:        /bootmgr /Boot/BCD /Windows/System32/winload.exe

sda4: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows Vista/7
    Boot sector info:   No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        

sda5: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows Vista/7
    Boot sector info:   No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /bootmgr /boot/bcd

sdb1: __________________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info:  
    Operating System:  
    Boot files:        /grub/grub.cfg /grub/core.img

sdb2: __________________________________________________________________________

    File system:       Extended Partition
    Boot sector type:  Unknown
    Boot sector info:  

sdb5: __________________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info:  
    Operating System:  Ubuntu 12.04.1 LTS
    Boot files:        /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img

sdb6: __________________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info:  
    Operating System:  
    Boot files:        

sdb7: __________________________________________________________________________

    File system:       swap
    Boot sector type:  -
    Boot sector info:  

============================ Drive/Partition Info: =============================

Drive: sda _____________________________________________________________________

Disk /dev/sda: 500.1 GB, 500107862016 bytes
256 heads, 63 sectors/track, 60563 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes

Partition  Boot  Start Sector    End Sector  # of Sectors  Id System

/dev/sda1                   1 4,294,967,295 4,294,967,295  ee GPT

/dev/sda1 ends after the last sector of /dev/sda

GUID Partition Table detected.

Partition    Start Sector    End Sector  # of Sectors System
/dev/sda1           2,048       411,647       409,600 EFI System partition
/dev/sda2         411,648       673,791       262,144 Microsoft Reserved Partition (Windows)
/dev/sda3         673,792   391,383,039   390,709,248 Data partition (Windows/Linux)
/dev/sda4     391,383,040   925,575,167   534,192,128 Data partition (Windows/Linux)
/dev/sda5     925,575,168   976,773,167    51,198,000 Windows Recovery Environment (Windows)

Drive: sdb _____________________________________________________________________

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes

Partition  Boot  Start Sector    End Sector  # of Sectors  Id System

/dev/sdb1    *          2,048       976,895       974,848  83 Linux
/dev/sdb2             978,942   379,883,519   378,904,578   5 Extended
/dev/sdb5             978,944    40,038,399    39,059,456  83 Linux
/dev/sdb6          40,040,448   372,070,399   332,029,952  83 Linux
/dev/sdb7         372,072,448   379,883,519     7,811,072  82 Linux swap / Solaris
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