I have a 24" intel imac with, i think, a hdd failure. I'd like to hear some opinions to confirm this before I tear it open to replace the hdd. The string of problems I've encountered started a few days ago. I normally let my imac go to sleep by itself but, on this occasion I told it to sleep via the apple menu. When I awoke the imac the screen was frozen. No mouse movement, no clock movement, nothing. At this point I turned the power off and back on again. It didn't get past the white screen (before the gray with apple logo). I then tried resetting the PRAM, booting in safe mode, and booting from my os disc. Nothing worked. After several tens of tries it magically booted. It stayed active long enough for me to back up all my data (transferring at least 100GB), reformat the hdd, reinstall leapord, transfer data back, and use it until I let it sleep again. I'm back to the point where it won't boot again. It doesn't get past the white screen. I can't select a drive to boot from or boot from a disc. From what I gathered this is the hdd failing. Can anyone confirm?