Hello! I don't know anything about Apple Computers or anything related to that and don't know anything about this forum, so if I do something wrong please tell me. So here's my question (problem) My iMac won't turn on. I plugged the cord in and I pressed the power button but I didn't turn on. I didn't do anything wrong before this happened. Can anyone help me solve this problem? Is the power cord broken or is it the iMac itself? I am very frustrated now because I don't...