I've had this issue for the past three days. I press the power button on my mac and the Apple logo appears for a long period of time. After the logo is gone, the usual blue background before login appears. The problem is that it just stays on this blue screen. There is occasional flickering from time to time (it goes from a lighter shade of blue to a darker one). I tried running single user and typing "fsck -y" and it reads that "The Volume _____ appears to be OK". I restart after this but still have the same issue. It just stays on the blue screen. I also tried resetting the PRAM and NVRAM, but still no luck. Any help would be greatly appreciated! I have a Leopard DVD but the optical drive on my MBP doesn't work. Thanks for reading!