I began hearing the click of death on my MAC. I backed up important files before it died and replaced the hard drive. Unfortunately, I was not able to load OS 10 and went back to OS 9. I was successful in loading OS 9 but the screen is distorted now. At first it was merely the shape of the screen; appearing inordinately "squished" but I was unable to adjust it back to proper shape. Now, when I boot, the images are all blurred......looking as tough they are flying by, trailing a bit of a shadow image. Any suggestions. I have a new iMac but wanted to let my kids use the old ones for school projects/games.