Unable to boot using EasyBCD


I was using Win7 in my laptop. I wanted to install win-xp also parallelly.
One of my friend got to know that we can install win-xp also using EasyBCD. So he installed it in my laptop and now I am unable to login to Win7 also.
When logging in it is asking to choose an operating system but its not shoowing any OS except that "EasyBCD BIOS Extender"

Kindly advise how to overcome this problem and restore old Win7 or install Win-XP.

Thanks & Regards,