Freezes then cannot boot because doesn't always sees the hard drive
This iMac will freeze unexpectedly with the rainbow roulette appearing. If I close and open the computer right away, it gets stuck on the first grey screen. If I try to do a disk repair with the install CD, the HardDrive does not appear. I brang it to a Mac retailer to have it diagnosed, and it passed all their tests and they said it worked fine! It used to do kernel panics but not anymore.
Anyone can help?
Is this a good question?