My brother's 2006 MacBook is crapping the bed. He told me he turned the computer and got the flashing question mark at the boot screen. When I turned the computer back on, I got the Apple at the boot screen (not the question mark), but the circular indicator just spins, and the computer won't boot. Trying to boot from the Install disc that came with the unit doesn't work, nor does trying to boot from the new Snow Leopard disc. Here is a complete list of what I've tried: 1) Reset PRAM (hold CMD + OPT + P + R at startup) 2) Reset NVRAM (hold CMD + OPT + N + V at startup) 3) Safe mode (hold Shift at startup) 4) Boot from CD (hold C at startup) 5) Force boot from CD (hold CMD + OPT + Shift + Delete at startup) 6) Manually select boot volume (hold OPT at startup) 7) Boot into firmware (hold CMD + Shift + O + F at startup 8) Boot into Single User Mode (hold CMD + S at startup) When I was in Single User Mode I ran "fsck" and then tried to remount the disk using "mount -uw /" and booting by typing "exit". No luck. Any ideas on how I can get the computer to boot from the CD? Is the HDD simply dead and needs to be replaced? Thanks for the help!