problem with search functionality

Hi,

Could you please check my website: http://windows7design.com/

and on right sidebar you have search option, try to use it and you will see my problem , some blank website will open, no search results

like for example i type: ‘beta’ and i got this good page and then it redirect me to: http://windows7design.com/?s=beta&x=0&y=0

BLANK page