How badly will my GCSEs grades affect my chances of getting into an Ivy League?

<p>I recently got my GCSE Results. I got 4A*s, 6As and one C, I am not very proud of my results and am worried whether it will affect my chances of getting into an Ivy League College. Currently, I am preparing for my SAT as well as my IB Subjects. I am hoping to get into the University of California, Berkeley or MIT in the future, to study Computer Science and Electrical Engineering. </p>