Hello, I have a MBP 13" from early 2011. The HDD was seeming to be a bit slow so I looked around online and many suggested the Seagate Momentous XT, the hybrid drive. So I ordered that and I also upgraded from 4GB to 8GB RAM, looking online to make sure I got the right type of RAM. Installed RAM and went to do a fresh install of Snow Leopard to my new HD. It wouldn't boot from USB stick or DVD. So hooked up my drive to a friend's Mac and installed Snow Leopard to it through his Mac. The install went fine there, and so I plugged it into my MBP 13" and it tries to boot up, but then gives me an error that says I need to reboot my MAC. Edit: Any time I tried to boot up to DVD or USB stick, it would give me the same error. Where it tells me in 5 different languages to reboot by holding down the Power key. Same one as with new HDD with Fresh Snow Leopard install. Edit: It still boots from the old HDD, but just runs slowly. Any ideas before I go to the Genius Bar this weekend?