Q: windows 7 boot camp problem on mac book

hi dear friends

I have a problem on installing windows 7 on mac book(midi 2010)

I've followed all instrctions on both of apple website and apple help for installing it but they were useless. I always face the problems that you see in the following images. windows can not boot from neither an external drive nor a dvd of wndows7("I had installed windows 7 on may macbook using it before").

sincerely Rozhin