Hello! I bought Mac Pro in Europe and I wanted US keyboard. They told me that it is not a problem to change it. After they changed it my comp did not turn on at all and it couldn't charge as well. No noise or anything when pressing the power button. I returned it to the apple store and they told me they'll call me back to pick it up. I am a bit concerned because I have no idea what they broke and should I ask for a new computer all together? What do you think?