can be contacted by fake? or that my computer is not properly grounded? because if I remove the fasteners on the right side where conceta the touch screen and puts him back to outside the computer case if it works well .... the problem now is to screw the box aquaero the image goes crazy

hello. I purchased a aquaero. the fact is that I have everything connected and works well ... but the image goes to the side .. not centered and does not look good. someone tells me how to fix it. I have said that may be because my box metal. I have a xs-pc h2