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ubuntu installation overwrites partitions table

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Hi guys, I think i am in a big trouble..

I had a 640GB hard drive partitioned as follow: |10GB (recovery) unused | 100GB windows 7| 450GB DATA | 40GB unused |
I was trying to install ubuntu in the last piece of hd, but in the instalation setup i selected whole disk wrongly. But right in the beggining of instalation I realize it and stop it, but it was late. My Windows dont boot anymore and I lost the other partitions. Ubuntu and windows instalation setup show only one partition when i'm trying to reinstall.

now i booting by ubuntu liveCD (usb stick) and i think i can recover all partitions, look the fdisk -l, called from live ubuntu:
Code:

# fdisk -l
Disk /dev/sda: 640.1 GB, 640135028736 bytes
255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00053d57

  Device Boot      Start        End      Blocks  Id  System
/dev/sda1  *        2048  1241913343  620955648  83  Linux
/dev/sda2      1241915390  1250263039    4173825    5  Extended
/dev/sda5      1241915392  1250263039    4173824  82  Linux swap / Solaris

Disk /dev/sdb: 8032 MB, 8032092160 bytes
248 heads, 62 sectors/track, 1020 cylinders, total 15687680 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x20ac7dda

This doesn't look like a partition table
Probably you selected the wrong device.

  Device Boot      Start        End      Blocks  Id  System
/dev/sdb1  ?  3224498923  3657370039  216435558+  7  HPFS/NTFS/exFAT
/dev/sdb2  ?  3272020941  5225480974  976730017  16  Hidden FAT16
/dev/sdb3  ?          0          0          0  6f  Unknown
/dev/sdb4        50200576  974536369  462167897    0  Empty

Partition table entries are not in disk order

searching on web, people say that it is possible to recover the partitions table with testdisk, i'm trying that, but i'm not sure it will help. i perform two deep-searches and the result was follows:

Code:

  Linux                    0  32 33 77305 135 14 1241911296
  Linux                    0  32 33 77305 135 14 1241911296
  HPFS - NTFS              0  32 33  1312 109 13  21082112 [Recovery]
  HPFS - NTFS          1312 109 14  1325  44 63    204800
  HPFS - NTFS              0  32 33  1312 206 46  21088256 [Recovery] <<<<< i think it is the 10GB partition
  HPFS - NTFS          1312 206 47  1325 142 33    204800 [Reservado pelo Sistema]
  Linux                    0  32 33 77305 135 14 1241911296
  HPFS - NTFS          1312 206 47  1325 142 33    204800 [Reservado pelo Sistema]
  HPFS - NTFS          1325 142 34 14061  5 24  204595200
  Linux                    0  32 33 77305 135 14 1241911296
  Linux                    0  32 33 77305 135 14 1241911296
  Linux                    0  32 33 77305 135 14 1241911296
  Linux                    0  32 33 77305 135 14 1241911296
  Linux                    0  32 33 77305 135 14 1241911296
  HPFS - NTFS          1325 142 34 14061  5 24  204595200  <<< i think it is the 100GB partition
  HPFS - NTFS          14061  5 25 72596 253 62  940380437 <<<  450GB partition

I choose one before, but didnk work... i dont remember the result.. will do asap and edit here..
result:

Code:

TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org

Disk /dev/sda - 640 GB / 596 GiB - CHS 77825 255 63

The harddisk (640 GB / 596 GiB) seems too small! (< 1078 GB / 1004 GiB)
Check the harddisk size: HD jumpers settings, BIOS detection...

The following partition can't be recovered:
    Partition              Start        End    Size in sectors
>  HPFS - NTFS          72596 254 63 131132 248 37  940380437

Do anyone know what to do in this situation?

thanks
best regards
Max

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