I have a MacBook Pro 17in 2010 model with a dual-core 2.66 GHz i7 processor, 500GB 5400 HD and 8GB of RAM. A week ago, my Hard Drive died and my computer would not start. You could hear audible clicking from the Hard Drive. Also, I had been having issues with my graphics card and would see incessant ghosting. So I took it to the Apple Store in Greensboro, NC where they replaced the hard drive and the logic board. I start it up in the store under 10.6.8 and it seems to work fine. Luckily before my hard drive died, I had cloned it to a back up hard drive. I then took my laptop home and cloned my backup to the internal hard drive. It starts up fine but after 10 minutes, the system freezes and the computer starts a series of three beeps. Now the machine will not start up and just keeps on beeping. I tried resetting the PRAM to no effect. Does anyone have any clue as to what is going on?