Harddrive bad. Was replaced by Apple a while ago. Out of warranty so I had to do it myself
I followed the guide step by step. It was very clear. Took about 1 hour and a half. No problems.
To remove and reinstall the display screws you need a magnetic Torx driver. I took a .25"x.25" NeB magnet and stuck it to the side of the torx driver. This gave enough holding power to do the job if you are careful. Apple shielding tape is a pain.
Phillips #1 Screwdriver
TR8 Torx Security Screwdriver
TR10 Torx Security Screwdriver
TR6 Torx Security Screwdriver