Unable To Boot Into Windows After Updating Debian into Wheezy??

Recently updated Debian on to unstable or testing version and unable to boot into Windows on a dual boot system since then? The system does not show up the boot loader menu after updating Debian? Or your computer system fails to recognize any Operating System after you updated Debian. Facing any or all of the above issues after updating Debian? Scared that you will lose all your files? You do not need to worry any more! Let us Re-install and recover the Windows boot loader to fix the errors that are preventing you from booting into Windows after updating Debian.
Updating GRUB (with the wrong options selected) while updating Debian usually results in this issue. After completely updating Debian on your system and rebooting it you may be unable to boot into Windows as your system only detects Debian or no operating system installed in your system, maybe it detect Windows but cannot log in into it because wrong drive disk section. To fix these problems we need to re-install or just simple fix Windows boot loader for your system to start detecting the Windows operating systems as it used to before updating Debian.
Here are the steps to re-install and recover Windows boot loader and to boot into both Windows normally after updating Debian.

Step 1 - Configure Boot Sequence -

If your boot sequence has boot from CD/DVD ROM as the first preferred device (that is, if you are able to directly boot from CD/DVD ROM after just inserting the DVD and rebooting your system) then you may skip this step.
We need to re-install the Windows boot loader from a Windows Installation DVD (Windows Vista or Windows 7). In order to make the computer system boot from the Windows Installation DVD (Windows Vista or Windows 7) we need to set the first preferred boot device as the CD/DVD ROM device instead of HDD which is usually the first preferred boot device.
To change the boot sequence you need to change the boot settings in BIOS. To access the BIOS, press the Delete or F2 or F10 key (depends on your computer system) on the very first screen that you see after switching on your computer system, that is, press any one key (depending on your computer system) when you see the very first boot screen (can be the Company Logo screen) to enter the BIOS setup.
Or maybe you just need log into grub and find your windows 7 recovery path.
Screen-shot:

Use Metode 1 :Save the new boot settings, insert the Windows Installation DVD (Windows Vista or Windows 7) in the CD/DVD ROM and restart the computer system.
If you have successfully changed the boot settings and have inserted the Windows Installation DVD you will see the following screen -
Screen-shot -

On booting from the Windows Installation DVD, the computer system will copy load some files for the next few minutes and then finally present you with the Windows setup start screen.
The Windows Installation DVD (Windows Vista or Windows 7) is designed for both installing Windows as well as repairing it. In the Windows setup start screen select your preferred language and other details and hit Next.
Screeen-shot -

On the next screen click on Repair your computer to start the advanced Windows Repair Utility.
Screen-shot -

 On clicking on Repair your computer the Windows Repair tool will automatically start searching for the already installed Windows and errors that are stopping Windows to load/boot properly. This may take a few minutes.
Screen-shot -

 If the only problem after updating Debian is with the Windows boot loader then the Windows repair tool usually offers to repair the boot loader. If it does then, click on Repair and Restart and wait for a few minutes to let the Windows repair tool repair the Windows boot loader. If all works well, then after the repair tool reboots your system, you will be able to boot into Windows as you were before updating Debian.

 If the Windows Repair tool does not automatically detect startup problems or is unable to repair the Windows Boot Loader then you need to manually re-install the Windows boot loader. To do this, click on the option - "Use repair tools to fix Windows startup problems".

Use Metode 2
Go to Windows Recovery, choose checkdisk, then you must found use CMD.
From the Startup recovery tools menu select Command Prompt from the available tools.
Screen-shot - 

Next run the following command in the command prompt window -

bootrec /rebuildbcd

The above command when executed will search for the available Windows installation on your system. Once it automatically detects the Windows installation on your system, it asks you if you want to add the Windows Installation on your system to the Boot list. Enter Y in order to add the Windows installation to the boot list.
Screen-shot -

 Next, exit the command prompt and reboot your system, and done. You can now normally boot into Windows (access all your files and programs that were there) as you were able to before updating Ubuntu (or updating GRUB).

Now Have Fun., :)