My iMac G5 with loud noise, I removed the dust with a bomb. Now it will not boot. In fact, it makes a little wow as if to start, I also feel that the DVD player wants to do something and then nothing. It lasts 1 second, 1 second 1 / 2. And regarding this I wonder what I could have damaging. I did not do backup! I can show you a picture of my mac! Could someone help me?