So I have a Macbook that had the 2006 corrupted hard drive issue. I went out and bought a 160 GB WD 2.5in HDD and installed it with no problem. I turned the computer back on, put in the installation disk and rebooted. I have tried the C key, the D key, and the option keys separately, but none of them do anything. The screen is grey for a while when it is processing the dvd, and then spits the dvd out. Then the screen shows the Question mark folder. Any suggestions on how to get this new hard drive formatted and working?