I really can use as much insight as possible thanks. Here is the problem. My hard drive was working fine until i came home last night from school. The I started getting the question mark that flashes when you boot up. I put install disc in and went to util. and the drive couldnt be found. This is the second time my hard drive has crapped out on me and both times happened right after I came home from school. I only use the internet at school so its shared to everybody so I don't know why my hard drives keeps crappin. I wanted to throw my computer in anger. I had the hard drive last 3 months. It's so frustrating. So now i dont know what to do really. I think I am going to buy a new one. My macbook is from 2006. Im just really frustrated. it seems like this only happens to mac. I'm getting sick of it. I might just buy a new non mac computer. But here is a hard drive I found for my mac, i need some opinions on it before i purchase it: Western Digital - Scorpio Blue 250GB Internal Serial ATA Hard Drive for Laptops - WDBABB2500ANC-NRSN