Hey everyone hopefully someone here can give me some help towards this problem, ive been trying to fix it for a while. I have a Macbook Model number: A1181 with Tiger 10.4 OS . I was messing around checking email and what not one day, left the computer for about 15 minutes came back and the computer was frozen, so i restarted and got the flashing folder with a question mark on it. The hard drive had obviously failed, you could hear it clicking with no problem. I ordered a new hard drive online to save myself some money, i got a 250gb seagate 2.5" drive. I've been working on pc's replacing hardware for years so replacing a hard drive isnt something that i find complicated at all. I installed the hard drive with no problem, turned the laptop back on and put in the original Install disc 1 and held down the C key at the chime. The optical drive will spin and it acts like its going to load but never does, sometimes the folder with the question mark will come back up, most of the time all i get is a blank white screen. Yesterday i bit the bullet and took it in to the genius bar to just get the problem taken care of, the lady who helped me at the genius bar assured me the problem was that the hard drive had failed and i just needed to replace it. She hooked her her external hard drive to prove this to me, inserted a disc into the laptop and it worked like a charm. So i came home and tried everything i could possibly think of that i was doing wrong. I've formatted the new drive using HFS+ and i still cant get the computer to boot from the optical drive or even recognize the hard drive. Any help would be greatly appreciated.