Can't boot Windows 7 after installing ubuntu

At first I install windows 7 and after that I install ubuntu 13.10.
But after install it, I can't boot to my old windows

Here is the step to fix this problem:
(source: link)

1. Boot in ubuntu
2. Open your terminal (just search terminal)
3. type:
   

   sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update

4. Enter your password and enter.
5. type:

   sudo apt-get install -y boot-repair && (boot-repair &)

6. It will make you install boot-repair in ubuntu
7. Repair your boot file
8. Restart
9. Try to boot to your windows 7