Here is the issue with my MacBook: Yesterday, it froze and I could not force quit anything, so I turned it off by holding the power key. Then, it would not start up. At first, it simply would go to the screen with the gray apple or go to the blue screen, but would sit there. Now, it the screen simply lights up (gray?), and sometimes a folder with a question mark comes up. My Apple Care ran out a little over a month ago, so I'm hoping it's a cheap fix, such as replacing the hard drive. Here's what I've tried: Resetting the power manager booting from the install CD (I got a folder with a question mark when I held down C to boot, and D for the diagnostic tools). Letting it sit overnight, hoping the issue would magically resolve on its own One note: when I try to start it up, there is a repeating quiet click that keeps going until I turn it off again. I would think I just need a new hard drive, but I'm not sure why I couldn't boot from the CD. My backup is Time Machine, not a clone, so no option there. Any thoughts? How can I know for sure if it's the hard drive? If it is, any recommendations on what to get would be great, as well as a tutorial on replacing a hard drive on a MacBook. Thanks in advance for your help!