Someone tried to be romantic in a very crappy Spanish.
A "translation" into regular Spanish will result in sort of this:
¿Te imaginas que tu eres la razón por la cual yo uso la computadora, para así poder estar contigo, porque tu eres parte de mi?.
Now in English:
Would you believe that you are the reason why i turn the computer on, in order to be with you, because you are a part of me?