Hello, I have had my IMac for a little over a week now and absolutely love it! Well, until the last few minutes. I was working on the computer clicked on itunes and the cursor acted as if it were stuck on itunes and every time I moved the cursor the itunes window moved along with it. I could do nothing so I rebooted. Now, every time I reboot, the screen is dim and all loads up but I cannot click on anything. Hellllpppppp!!!